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Abstract

The objective of the present study was to investigate whether dietary patterns are associated with excess weight and abdominal obesity among young adults (23-25 years). A cross-sectional study was conducted on 2061 participants of a birth cohort from Ribeirão Preto, Brazil, started in 1978-1979. Twenty-seven subjects with caloric intake outside ±3 standard deviation range were excluded, leaving 2034 individuals. Excess weight was defined as body mass index (BMI ≥ 25 kg/m(2)), abdominal obesity as waist circumference (WC > 80 cm for women; >90 cm for men) and waist/hip ratio (WHR > 0.85 for women; >0.90 for men). Poisson regression with robust variance adjustment was used to estimate the prevalence ratio (PR) adjusted for socio-demographic and lifestyle variables. Four dietary patterns were identified by principal component analysis: healthy, traditional Brazilian, bar and energy dense. In the adjusted analysis, the bar pattern was associated with a higher prevalence of excess weight (PR 1.46; 95 % CI 1.23-1.73) and abdominal obesity based on WHR (PR 2.19; 95 % CI 1.59-3.01). The energy-dense pattern was associated with a lower prevalence of excess weight (PR 0.73; 95 % CI 0.61-0.88). Men with greater adherence to the traditional Brazilian pattern showed a lower prevalence of excess weight (PR 0.65; 95 % CI 0.51-0.82), but no association was found for women. There was no association between the healthy pattern and excess weight/abdominal obesity. In this sample, the bar pattern was associated with higher prevalences of excess weight and abdominal obesity, while the energy-dense (for both genders) and traditional Brazilian (only for men) patterns were associated with lower prevalences of excess weight.
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Eur J Nutr
DOI 10.1007/s00394-015-1022-y
ORIGINAL CONTRIBUTION
Dietary patterns are associated with excess weight and abdominal
obesity in a cohort of young Brazilian adults
Soraia Pinheiro Machado Arruda1 · Antônio Augusto Moura da Silva2 ·
Gilberto Kac3 · Ana Amélia Freitas Vilela3 · Marcelo Goldani4 · Heloisa Bettiol5 ·
Marco Antônio Barbieri5
Received: 3 November 2014 / Accepted: 13 August 2015
© Springer-Verlag Berlin Heidelberg 2015
body mass index (BMI 25 kg/m2), abdominal obesity
as waist circumference (WC > 80 cm for women; >90 cm
for men) and waist/hip ratio (WHR > 0.85 for women;
>0.90 for men). Poisson regression with robust variance
adjustment was used to estimate the prevalence ratio (PR)
adjusted for socio-demographic and lifestyle variables.
Four dietary patterns were identified by principal compo-
nent analysis: healthy, traditional Brazilian, bar and energy
dense.
Results In the adjusted analysis, the bar pattern was asso-
ciated with a higher prevalence of excess weight (PR 1.46;
95 % CI 1.23–1.73) and abdominal obesity based on WHR
(PR 2.19; 95 % CI 1.59–3.01). The energy-dense pattern
was associated with a lower prevalence of excess weight
(PR 0.73; 95 % CI 0.61–0.88). Men with greater adherence
to the traditional Brazilian pattern showed a lower preva-
lence of excess weight (PR 0.65; 95 % CI 0.51–0.82), but
no association was found for women. There was no asso-
ciation between the healthy pattern and excess weight/
abdominal obesity.
Conclusions In this sample, the bar pattern was associ-
ated with higher prevalences of excess weight and abdomi-
nal obesity, while the energy-dense (for both genders) and
traditional Brazilian (only for men) patterns were associ-
ated with lower prevalences of excess weight.
Keywords Dietary patterns · Excess weight · Abdominal
obesity · Young adults
Introduction
Excess weight and obesity currently represent two of the
biggest health problems in developed and developing coun-
tries, being considered important risk factors for various
Abstract
Purpose The objective of the present study was to
investigate whether dietary patterns are associated with
excess weight and abdominal obesity among young adults
(23–25 years).
Methods A cross-sectional study was conducted on 2061
participants of a birth cohort from Ribeirão Preto, Brazil,
started in 1978–1979. Twenty-seven subjects with caloric
intake outside ±3 standard deviation range were excluded,
leaving 2034 individuals. Excess weight was defined as
Electronic supplementary material The online version of this
article (doi:10.1007/s00394-015-1022-y) contains supplementary
material, which is available to authorized users.
* Soraia Pinheiro Machado Arruda
soraia.arruda@uece.br
1 Department of Nutrition, State University of Ceará, Av. Dr.
Silas Munguba, 1700, Coordination of Nutrition Course,
Itapery, Fortaleza, CE 60740-000, Brazil
2 Department of Public Health, Federal University
of Maranhão, Rua Barão de Itapary, 155, Centro, São Luís,
MA 65.020-070, Brazil
3 Nutritional Epidemiology Observatory, Graduate Program
in Nutrition, Department of Social and Applied Nutrition,
Institute of Nutrition Josué de Castro, Federal University
of Rio de Janeiro, Avenida Carlos Chagas Filho, 367, CCS
– Bloco J – 2º andar, sala 29, Cidade Universitária – Ilha do
Fundão, 21941-590 Rio de Janeiro, RJ, Brazil
4 Department of Pediatrics and Puericulture, Faculty
of Medicine, Federal University of Rio Grande do Sul,
Rua Ramiro Barcellos, 2350, Bom Fim, Porto Alegre, RS
90035-003, Brazil
5 Department of Pediatrics and Puericulture, Faculty
of Medicine of Ribeirão Preto, University of São Paulo,
Av. Bandeirantes, 3900, Monte Alegre, Ribeirão Prêto, SP
14049-900, Brazil
Eur J Nutr
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non-communicable chronic diseases (NCCD) [13]. It is
estimated that 1.46 billion adults are overweight all over
the world, of whom 205 million men and 297 million
women are obese [4]. In Brazil, 49.0 % of the adult popula-
tion is overweight and 14.8 % of all individuals are obese
[5].
The importance of diet in the genesis of obesity has been
well established in the literature, although the pathways
through which diet produces obesity remain controversial
[6]. Studies on the dietary factors associated with excess
weight and obesity conducted over the last decades have
given priority to the determination of specific dietary com-
ponents such as macronutrients and fiber [7, 8]. However,
the variety of foods in a diet results in a complex combi-
nation of chemical compounds that may be antagonistic
and that may compete with or alter the bioavailability of
other chemical compounds or nutrients, a fact that is taken
into account only when dietary patterns are considered [9].
The analysis of food consumption based on dietary patterns
enhances the understanding of the processes of prevention
and treatment of obesity and other NCCD, representing a
fundamental tool for nutritional interventions [9, 10].
Over the last decade, the association of dietary patterns
with obesity has been investigated in various studies [11
16]. Dietary patterns consisting of red meat, whole milk
dairy products, processed foods and refined grains, usually
denoted as “Western” [11, 13, 15], appear to be positively
associated with general and abdominal obesity [13, 15].
In contrast, dietary patterns denoted “prudent or healthy,
involving the consumption of fruits, vegetables, whole
grains and fish, are inversely associated with obesity [14,
17]. Most of these studies were conducted in developed
countries on populations older than 30 years of age. Few
studies have been specifically conducted [16] on young
adults who are at risk of obesity or even for excess weight
gain during this period that marks the transition between
adolescence and the early stages of adult life [18, 19].
The objective of the present study was to investigate
whether dietary patterns are associated with excess weight
and abdominal obesity in young adults from the 1978/79
Ribeirão Preto birth cohort, São Paulo, Brazil. As a second-
ary objective, we aimed to describe daily portion sizes of
each food group for those in the lowest and highest quar-
tiles of adherence to each dietary pattern stratifying by sex.
Methods
Study design and setting
This was a cross-sectional study nested in the first Ribeirão
Preto birth cohort, São Paulo, Brazil, started in 1978/79,
which investigated live births that took place at hospitals
to mothers residing in the municipality. The study used
data collected during the fourth phase of the research, con-
ducted from 2002 to 2004. A total of 9396 children born
at the eight maternities of Ribeirão Preto from June 1978
to May 1979 participated in the original study, correspond-
ing to 98 % of live-born infants. Losses due to refusal or
early hospital discharge amounted to 3.5 % (329). After the
exclusion of children whose families do not reside in the
municipality (2094) and of twins (146), 6827 of the ini-
tial sample were left. Of these, 343 died before complet-
ing 20 years of age, with 6484 eligible subjects remaining.
Based on the records of the Unified Health System and of
private health plans, and on contacts made during the sec-
ond and third phase of the study, it was possible to locate
5665 individuals. Based on the geoeconomic characteriza-
tion of the city, divided into four regions according to head
of family income, one in three individuals was contacted.
The losses due to refusal to participate (209 cases), death
after 20 years of age (34 cases), imprisonment (31 cases)
and failure to attend the interview (431 cases) resulted in a
total of 705 individuals. Thus, a total of 2063 adults aged
23–25 years, corresponding to 31.8 % of the 6484 subjects,
participated in the fourth phase of the Ribeirão Preto cohort
study [20]. Two subjects were excluded because they did
not fill out the Food Frequency Questionnaire (FFQ)
and 27 because they reported energy intake outside the
range ± 3SD, leaving 2034 cases for analysis.
The study was conducted according to the directives
established in the Declaration of Helsinki, and all pro-
cedures involving human beings were approved by the
Research Ethics Committee of the University Hospital,
Faculty of Medicine of Ribeirão Preto, University of São
Paulo, Brazil. All persons gave their informed consent prior
to their inclusion in the study.
Study variables
The participants responded to a questionnaire containing
socioeconomic, demographic and lifestyle data in which
the following variables were considered: sex, self-reported
skin color, marital status, monthly family income, educa-
tion, level of physical activity, and current smoking habit.
Skin color was investigated as a proxy for race, according
to the Brazilian census criterion that considers the self-
reported skin color. Educational status was obtained by the
completed years of study. The monthly household income
was calculated summing the income of all family members
residing in the household in the last month and was subse-
quently converted into Brazilian minimum wages, which is
the most used approach to assess monthly income in Brazil.
The conversion of the Brazilian minimum wage was essen-
tially equivalent to US$ 89.8 in 2003. Currently, the Brazil-
ian monthly household income is equivalent to US$ 273.9
Eur J Nutr
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per month. The level of physical activity was assessed
based on the International Physical Activity Questionnaire
protocol [21]. Physical activity was then classified as low,
moderate and high, based on the metabolic cost or unit of
resting metabolic rate (MET) following IPAQ guidelines.
Tobacco consumption during the last month preceding the
interview was considered to be current smoking habit; how-
ever the amount of tobacco consumed was not investigated.
Dietary data were obtained from a FFQ adapted from an
instrument validated for the Japanese–Brazilian community
of São Paulo, which was later used in programs of preven-
tion of NCCD diseases for adults after the exclusion of
foods of Japanese origin [22]. The adapted FFQ contained
75 items, the respective option of frequency of consump-
tion during the last year (number of times per day, week, or
month) and the size of the mean reference portion, so that
the individual would estimate whether the portion usually
consumed was small (smaller than the reference), medium
(equal to the reference) or large (larger than the reference),
representing the 25th, 50th and 75th percentiles, respec-
tively. A nutritionist administered the questionnaire and a
photo album was used to help the subject estimates the por-
tions consumed. The methodology of this study has been
described in detail by Molina et al. [23].
The nutritional composition of the foods was obtained
from the Dietsys software, version 4.0 (National Can-
cer Institute, Bethesda, MD, USA), which estimates the
chemical composition of the foods by their daily portion
sizes described in the FFQ. Some Brazilian foods and
food preparations that were not available in the Dietsys
program were added to this software when complete data
about them were available from Brazilian tables of food
composition [24]. Foods with incomplete or doubtful infor-
mation regarding its chemical composition were replaced
with foods of similar composition. We opted to use mainly
the US food composition dataset, because when the data
of this study were collected, although there was a Brazil-
ian food composition dataset available, it was incomplete
with missing information about nutritional composition of
some foods. The caloric contributions of proteins, carbohy-
drates and fats were calculated by dividing the caloric value
of each of these nutrients by the total caloric value of the
diet and multiplying by 100 in order to express the values
as percentages.
In order to identify the dietary patterns, the daily por-
tion consumption of each food in grams or milliliters was
the dietary variable used for analysis. The 75 items of the
FFQ were divided into 48 groups according to similar-
ity of nutritional composition and frequency of intake.
The food items with high intake that were cited by at
least 80 % of the subjects, such as rice, beans, banana,
chicken, beef, eggs and non-diet sodas, were kept sepa-
rate [25, 26].
Excess weight was measured by the body mass index
(BMI), and abdominal obesity was measured according to
waist circumference (WC) and the waist/hip ratio (WHR),
which assess fat accumulated in the central or abdominal
region. For this purpose, body weight, height [27] and waist
and hip circumferences [28] were measured in the young
adults according to the techniques standardized. Trained
doctors and nurses made these measurements. Weight was
measured with a Filizola® scale (São Paulo, SP, Brazil)
with 100 g graduations and with a 140-kg capacity, and
height was measured with a wood stadiometer with 0.5 cm
markings. WC was obtained as the smallest circumference
between the ribs and the iliac crest at the end of a normal
expiration, with the subjects standing up with a relaxed
abdomen. When there was no natural waist, the measure-
ment was made at the level of the navel. The values were
recorded with 0.1 cm precision. Height and waist and hip
circumferences were measured in duplicate. When these
two measurements differed by more than the amount rec-
ommended in the protocol, a third measurement was per-
formed. The average of the two more similar measures was
considered. BMI was calculated as weight in kg divided by
height in meters squared (kg/m2), and WHR was calculated
as the measure of WC in cm divided by hip circumference
in cm.
Statistical analysis
To determine the dietary patterns, we used the method of
principal components analysis (PCA) followed by orthogo-
nal varimax rotation. The fit of the data was confirmed by
the coefficient of Kaiser–Meyer–Olkin (KMO) and the
Bartlett’s test of sphericity [29, 30]. The number of factors
retained was defined according to the following criteria:
components with eigenvalues higher than 1.0, Cattel graph
(scree plot) and conceptual meaning of the patterns identi-
fied. Each principal component was interpreted on the basis
of foods with a factorial load 0.3 or ≤−0.3, considered to
make an important contribution to the pattern [10]. Within
a component, negative loads indicate inverse association
of the food item and positive loads indicate a direct asso-
ciation [31]. The dietary patterns were labeled according
to the nutritional composition of the foods that the factors
included. More methodological details of the dietary pat-
terns have been published elsewhere [32].
Four principal dietary patterns were identified: healthy
(positive factorial loads for vegetables, fruits, peas and
other legumes, fish, non-fried potatoes, manioc and polenta,
chicken and breakfast cereals); traditional Brazilian (posi-
tive factorial loads for beans, rice, margarine and beef and a
negative factor loading for low-fat dairy foods, whole grain
bread and diet sodas); bar (positive factorial loads for alco-
holic beverages, salty snacks, pork meat, sausages, eggs,
Eur J Nutr
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bacon, seafood and mayonnaise); and energy dense (posi-
tive factorial loads for desserts, white bread, cookies, choc-
olates, popcorn/chips, fried potatoes, manioc and polenta
and whole milk dairy products). Usually, the studies that
have identified a dietary pattern composed of a combina-
tion of bar and energy-dense foods are labeled as processed
pattern [25, 33, 34]. In our study, the bar and energy-dense
dietary patterns were representative of the processed pat-
tern and labeled as bar pattern because it was composed of
alcoholic beverages and foods commonly served in bars or
pubs, and like the energy-dense pattern, this dietary pattern
was characterized by highly caloric foods.
Together, the four patterns explained 20.9 % of the total
variance, with the healthy and traditional Brazilian patterns
explaining the greatest proportion of variance (6.6 and
5.1 %, respectively).
Each individual received a score for each factor cal-
culated by the sum of the standardized value of the items
(food groups), weighted with their absolute scoring coef-
ficients (factor loadings). In the PCA, the dietary patterns
are not mutually exclusive. On the contrary, the individuals
adhere to all dietary patterns (in a higher or lower degree).
Thus, to verify the adherence, the dietary patterns were cat-
egorized into quartiles, with the upper quartile of the distri-
bution representing those with the highest adherence to the
pattern.
The main variables were analyzed descriptively accord-
ing to sex divided in quartiles. To determine the differ-
ences between the characteristics of the individuals within
the lower quartile (Q1) and those of the individuals within
the highest quartile (Q4) of consumption in each pattern,
we used analysis of variance for continuous variables and
the Chi-square test for categorical variables. The Q2 and
Q3 quartiles were omitted from this analysis. The Shap-
iro–Wilk test was used to assess normal distribution of the
quantitative variables.
Daily portion intakes of each food group were described
for those in the lowest and highest quartiles of adherence
to each dietary pattern stratified by sex. The ANOVA was
applied to compare the means of the quartiles.
To determine the association of the dietary patterns
with excess weight and abdominal obesity, we used Pois-
son regression with robust estimate of variance in bivari-
ate analysis and in multivariable analysis in order to esti-
mate the prevalence ratios (PR). The dependent variables
(excess weight/obesity according to the three indicators
investigated) were classified as dichotomous, i.e., with
excess weight/obesity (BMI 25 kg/m2 [35], WHR > 0.85
for women and >0.90 for men [36], and WC > 0.80 cm for
women and >0.90 cm for men [37]) and without excess
weight/obesity. In multivariable analysis, the adjust-
ment was performed for the socio-demographic vari-
ables (self-reported skin color, monthly family income
and marital status) and variables associated with lifestyle
(current smoking habit, level of physical activity and total
energy intake). All dietary patterns were inserted in the
analysis, i.e., simultaneous adjustment was made between
the dietary patterns. Interaction terms between sex and
excess weight/abdominal obesity were tested and when sig-
nificant models were presented stratified by sex. Since the
independent variables were categorized into quartiles, the
P value for trend was calculated. Point estimate and 95 %
confidence intervals were calculated. The level of signifi-
cance was set at 0.05. Since power to test for interaction
was lower than the power to test for main effects, signifi-
cance level was set at 0.10 for interaction terms to increase
sensitivity, although at the cost of increasing the risk of
type I error (false positive) [38]. The statistical analyses
were carried out with the aid of the Stata software, version
10.0.
Results
Individuals with greater adherence (Q4) to the healthy pat-
tern were less sedentary (30.2 % of men and 44.5 % of
women) than those with the lowest adherence (Q1) (53.1
and 65.9 % of men and women, respectively). Among men,
the percentage of smokers was lower in the highest quar-
tile (Q4) (18.5 vs. 28.0 %). Individuals in the Q4 of the
healthy dietary pattern had more energy from protein and
less energy from fats compared to individuals in Q1. There
was no significant difference between Q1 and Q4 regarding
excess weight and/or abdominal obesity among men and
women (Table 1).
For the traditional Brazilian pattern, men in the upper
quartile of adherence showed a lower prevalence of excess
weight (35.9 %) than those in the lowest quartile (53.7 %),
while women who more adhered to this pattern showed
higher frequency of excess weight/obesity when compared
to Q1 on the basis of the three indicators assessed: BMI
(31.1 vs. 24.1 %), WC (18.5 vs. 9.0 %) and WHR (12.1 vs.
5.3 %). The diet consumed by men and women with greater
adherence to this pattern showed a greater caloric contribu-
tion from carbohydrates and a lower contribution from pro-
teins and fats compared to the diet of Q1 subjects (Table 1).
Considering the bar pattern, men in the Q4 showed a
higher frequency of sedentary (44.0 vs. 42.1 %) and excess
weight/obesity than Q1 men on the basis of the three indi-
cators assessed: BMI (52.1 vs. 39.4 %), WC (18.1 vs.
7.4 %) and WHR (26.7 vs. 15.8 %). Current smoking habit
was more frequent among men and women who adhere
more to this pattern. The diet consumed by Q4 individuals
showed a lower caloric contribution of carbohydrates and
a higher contribution of proteins and fats compared to that
consumed by Q1 individuals (Table 1).
Eur J Nutr
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Table 1 Characteristics of 23- to 25-year-old adults of the Ribeirão Preto birth cohort (4th phase: 2002–2004) according to quartile categories of dietary patterns
Healthy pattern Traditional Brazilian pattern
Males Females Males Females
Q1 Q4 PQ1 Q4 PQ1 Q4 PQ1 Q4 P
N 243 243 – 266 265 – 243 243 – 266 265 –
% Excess weight (BMI)a44.6 49.8 0.312 30.7 26.0 0.503 53.7 35.9 0.015 24.1 31.1 0.013
BMI (kg/m2) 25.2/4.6 25.5/4.8 0.058 23.7/4.8 23.4/5.1 0.894 25.6/4.1 24.5/4.7 0.039 23.0/4.1 24.0/5.7 0.047
% Central obesity (WC)b14.1 11.9 0.180 15.1 12.1 0.434 12.4 10.3 0.888 9.0 18.5 0.001
WC (cm) 88.2/12.1 88.7/12.3 0.175 77.0/11.1 76.1/11.9 0.572 88.7/11.0 86.4/12.6 0.125 74.4/10.0 78.5/12.5 <0.001
% Central obesity (WHR)c23.5 24.7 0.387 9.8 8.3 0.926 20.7 20.6 0.736 5.3 12.1 0.001
WHR 0.86/0.07 0.86/0.06 0.311 0.77/0.06 0.75/0.06 0.194 0.85/0.06 0.85/0.06 0.394 0.74/0.06 0.78/0.06 <0.001
% Smokers 28.0 18.5 0.006 15.0 16.2 0.113 21.0 21.4 0.501 15.0 14.0 0.857
% Sedentary 53.1 30.2 <0.001 65.9 44.5 <0.001 42.0 41.3 0.713 51.3 60.8 0.240
Food intake
% Carbohydrate calories 47.7/8.1 48.3/6.8 0.488 47.0/7.4 48.3/5.9 0.136 44.8/6.8 50.0/6.8 <0001 45.7/6.7 49.9/7.1 <0.001
% Protein calories 14.9/2.7 16.9/3.6 <0.001 14.7/3.1 17.2/3.3 <0.001 17.5/3.7 15.1/2.7 <0.001 17.3/3.7 14.9/3.3 <0.001
% Fat calories 37.1/6.5 34.5/5.2 <0.001 37.8/5.7 34.3/4.9 <0.001 37.3/5.9 34.5/5.2 <0.001 36.9/6.0 34.7/5.1 <0.001
Bar food pattern Energy-dense pattern
Males Females Males Females
Q1 Q4 PQ1 Q4 PQ1 Q4 PQ1 Q4 P
N 243 243 – 266 265 – 243 243 – 266 265 –
% Excess weight (BMI)a39.4 52.1 0.033 26.8 28.7 0.441 50.8 39.3 0.074 32.6 25.7 0.052
BMI (kg/m2) 24.3/4.1 26.1/4.7 <0.001 23.4/5.5 23.7/4.7 0.250 25.5/4.7 24.5/4.1 0.074 23.8/4.8 23.3/5.2 0.657
% Central obesity (WC)b7.4 18.1 0.001 13.6 14.7 0.200 11.9 11.2 0.979 14.7 15.9 0.643
WC (cm) 85.3/10.2 90.5/12.3 <0.001 76.0/12.3 76.8/10.7 0.095 88.9/12.1 86.7/10.9 0.175 76.9/11.5 76.5/11.8 0.980
% Central obesity(WHR)c15.8 26.7 0.032 9.4 7.9 0.822 24.7 18.6 0.445 9.8 8.3 0.879
WHR 0.85/0.05 0.87/0.06 0.004 0.76/0.06 0.76/0.06 0.627 0.86/0.06 0.85/0.06 0.758 0.76/0.06 0.76/0.06 0.727
% Smokers 7.0 35.8 <0.001 3.0 30.2 <0.001 25.9 19.7 0.034 19.5 10.6 0.009
% Sedentary 42.1 44.0 0.034 54.2 50.2 0.057 45.9 41.6 0.180 57.4 53.0 0.402
Food intake
% Carbohydrate calories 50.9/6.3 44.4/6.9 <0.001 50.9/5.9 44.4/7.3 <0.001 49.1/8.6 46.7/6.1 <0.001 48.5/8.0 46.9/6.5 0.053
% Protein calories 15.2/3.2 16.5/3.3 <0.001 14.6/3.1 16.8/3.7 <0.001 16.7/4.1 15.0/2.4 <0.001 17.3/4.1 14.7/2.8 <0.001
% Fat calories 33.6/4.8 38.7/5.7 <0.001 34.4/4.7 38.3/6.1 <0.001 33.6/5.9 38.2/5.5 <0.001 33.6/5.3 38.3/5.3 <0.001
Values reported as means/standard deviation for the continuous variables and as percentages for the categorical variables
Q1, the lower quartile of the distribution represents the lowest adherence to the pattern; Q4, the upper quartile of the distribution represents the highest adherence to the pattern
ANOVA for continuous variables and Chi-square test for categorical variables
a Excess weight: body mass index—BMI 25 kg/m2
b Central obesity, waist circumference WC > 80 cm for women and >90 cm for men
c Central obesity, waist hip ratio WHR > 0.85 for women and >0.90 cm for men
Eur J Nutr
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Individuals in the highest quartile of consumption of
the energy-dense dietary pattern showed a lower percent-
age of smokers (men: 19.7 vs. 25.9 % and women: 10.6
vs. 19.5 %) than those in the lowest quartile. The caloric
contribution of protein was lower, while the contribution
of fats was higher among individuals adhering to this pat-
tern compared to Q1 individuals. Among men, the diet con-
sumed by Q4 individuals showed a lower caloric contribu-
tion of carbohydrates. Prevalences of excess weight did not
differ comparing those in the lower with those in the upper
quartile of adherence to the energy-dense pattern (Table 1).
We observed that daily portion sizes of foods that com-
posed the healthy pattern were higher for women as compared
to men in the highest quartile, except for fish, chicken, banana
and fruit juice (Online Resource Table 1). The daily portion
intakes of those in the highest quartile of the traditional Brazil-
ian pattern were higher for men when compared to women for
rice, beans and low-fat dairy foods (Online Resource Table 2).
Beer and salty snacks were the two items with the highest
daily portion sizes for the bar pattern, independently of the
sex. These items were followed by cold cuts and pork meat
(Online Resource Table 3). Whole dairy products, white bread
and desserts were the food items with the highest daily portion
sizes in the highest quartile of adherence for the energy-dense
pattern (Online Resource Table 4).
A significant interaction between sex and excess
weight/obesity (BMI: P = 0.005; WC: P = 0.054; WHR:
P = 0.018) was detected only for the traditional Brazil-
ian dietary pattern (data not shown in table). We tested an
interaction term between the bar pattern and sex, and it
turned out to be nonsignificant, so the bar pattern is similar
between both sexes.
In the adjusted analysis, a greater adherence to the bar
pattern was associated with a higher prevalence of excess
weight (PR 1.46; CI 95 % 1.23–1.73) and abdominal obe-
sity as measured by WHR (PR 2.19; CI 1.59–3.01). The
energy-dense pattern was found to be associated with lower
prevalences of excess weight (PR 0.73; 95 % CI 0.61–0.88).
After adjustment in multivariable analysis, there was no
association between the healthy pattern and excess weight/
abdominal obesity (Table 2). The traditional Brazilian pat-
tern seemed to protect against excess weight among men
(PR 0.63; CI 95 % 0.50–0.79). However, among women,
the association between more adherence to this pattern and
higher excess weight/abdominal obesity detected in the
unadjusted analysis was no longer present after adjustment
(Table 3).
Discussion
The traditional Brazilian (among men) and energy-dense
patterns were associated with a lower prevalence, whereas
the bar pattern was associated with a higher prevalence of
excess weight and/or abdominal obesity.
The dietary pattern labeled healthy was not associated
with excess weight/abdominal obesity. These findings dif-
fer from those reported in most studies, in which dietary
patterns considered healthy were inversely associated with
obesity [14, 17, 39, 40] in cross-sectional studies and with
lower BMI and WC gains in longitudinal studies [41, 42].
In a study on adult women from southern Brazil, different
dietary patterns consisting of healthy foods were identified,
in which the pattern denoted “fruits” was inversely associ-
ated with obesity, as measured by BMI, while the “vegeta-
bles” pattern was directly associated with obesity [7].
The composition of the healthy dietary pattern identified
in the present study is similar to that reported in other stud-
ies [12, 13, 31, 43], composed of vegetables, fruits, peas
and other legumes, fish and chicken, and characterized by
foods rich in vitamins, minerals, fibers, unsaturated fats,
containing low amounts of simple sugars and trans and
saturated fats [15]. However, we hypothesize that the pres-
ence of foods with high starch content in this pattern may
increase the glycemic content of such foods. However, we
were unable to specify the way preparations were cooked.
High consumption of energy-dense foods such as break-
fast cereals may explain why we did not find an associa-
tion between this pattern and lower prevalences of excess
weight/abdominal obesity. In addition, some studies sug-
gest that a wide variety of food items in the diet may play a
role in the increase in BMI [44, 45].
Individuals of both sexes with higher scores for the
healthy pattern (Q4) were found to be less sedentary and to
consume a diet with a greater contribution of proteins and
a lower contribution of fats compared to Q1 individuals,
supporting the notion that a healthy diet is associated with
other healthy habits [11, 14, 15, 25, 46, 47].
The second pattern identified was called traditional
Brazilian, consisting of traditional foods of the Brazilian
diet (rice and beans), and was found to protect against
excess weight among men. Other Brazilian studies have
also identified patterns similar to this [14, 25, 31, 44, 47,
48] and have observed a similar protective effect of the
traditional pattern against excess weight measured by
the BMI [16, 44, 45]. The protective effect of this pat-
tern may be explained by: (1) a low glycemic index of
the rice and beans combination; (2) the high fiber content
of beans; (3) the reduced variety of the foods included
in this pattern [44, 45]; and (4) a lower consumption of
processed foods habitually consumed outside the home,
since the consumption of rice and beans suggested a diet
prepared at home [16, 45]. On the other hand, Neumann
et al. [47] also observed a positive association of the “tra-
ditional” pattern with obesity, although measured accord-
ing to the BMI. Among women, after adjustment, there
Eur J Nutr
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Table 2 Non-adjusted and adjusted prevalence ratios (PR) and 95 % confidence intervals (95 % CI) for the association of excess weight and abdominal obesity with the healthy, bar and
energy-dense food dietary patterns identified among 23- to 25-year-old adults of the Ribeirão Preto cohort (4th phase: 2002–2004)
The dietary patterns were categorized into quartiles—Q1 (the lower quartile of the distribution represents the lowest adherence to the pattern), Q2, Q3 and Q4 (the upper quartile of the distribu-
tion represents the highest adherence to the pattern)
* P value referring to the maximum likelihood ratio obtained by Poisson regression (P value for trend)
a Excess weight: body mass index—BMI 25 kg/m2
b Central obesity, waist circumference WC > 80 cm for women and >90 cm for men
c Central obesity, waist hip ratio WHR > 0.85 for women and >0.90 cm for men
d Adjusted for skin color, schooling, monthly family income, marital status, smoking habit, level of physical activity, and total caloric intake (kcal/day) and the other dietary patterns
Dietary patterns Excess weight (Body Mass Index—BMI)aAbdominal obesity (waist circumference—WC)bAbdominal obesity (waist hip ratio—WHR)c
% Non-adjusted PR
(95 % CI)
Adjusted PRd (95 %
CI)
% Non-adjusted PR
(95 % CI)
Adjusted PRd (95 % CI) % Non-adjusted PR
(95 % CI)
Adjusted PRd
(95 % CI)
Healthy P = 0.719 P = 0.866 P = 0.558 P = 0.800 P = 0.778 P = 0.455
Q1 38.1 Reference Reference 14.4 Reference Reference 16.6 Reference Reference
Q2 35.2 0.92 (0.79–1.09) 0.95 (0.81–1.12) 12.6 0.87 (0.64–1.19) 0.89 (0.65–1.22) 14.4 0.87 (0.65–1.16) 0.89 (0.67–1.19)
Q3 35.0 0.92 (0.78–1.08) 0.97 (0.82–1.14) 11.8 0.81 (0.59–1.13) 0.86 (0.62–1.19) 14.7 0.89 (0.69–1.18) 0.94 (0.71–1.26)
Q4 36.0 0.95 (0.81–1.11) 1.01 (0.85–1.20) 11.8 0.82 (0.60–1.13) 0.89 (0.63–1.24) 15.5 0.94 (0.71–1.24) 1.13 (0.84–1.51)
Bar P < 0.001 P < 0.001 P = 0.085 P = 0.149 P < 0.001 P < 0.001
Q1 31.6 Reference Reference 12.2 Reference Reference 16.6 Reference Reference
Q2 32.1 1.01 (0.85–1.21) 1.03 (0.87–1.23) 10.0 0.82 (0.58–1.16) 0.84 (0.59–1.19) 14.4 1.14 (0.81–1.60) 1.16 (0.83–1.63)
Q3 35.8 1.13 (0.95–1.34) 1.15 (0.97–1.37) 13.0 1.06 (0.77–1.47) 1.13 (0.82–1.58) 14.7 1.39 (1.01–1.91) 1.47 (1.06–2.04)
Q4 44.9 1.42 (1.21–1.67) 1.46 (1.23–1.73) 15.3 1.25 (0.92–1.71) 1.25 (0.89–1.76) 15.5 2.01 (1.50–2.71) 2.19 (1.59–3.01)
Energy dense P = 0.004 P = 0.004 P = 0.673 P = 0.464 P = 0.315 P = 0.720
Q1 42.4 Reference Reference 13.2 Reference Reference 16.6 Reference Reference
Q2 34.1 0.80 (0.69–0.94) 0.83 (0.71–0.97) 12.2 0.93 (0.67–1.28) 0.95 (0.69–1.32) 14.4 0.92 (0.70–1.22) 0.99 (0.76–1.30)
Q3 35.8 0.84 (0.72–0.98) 0.86 (0.73–1.01) 11.4 0.87 (0.62–1.20) 0.82 (0.59–1.15) 14.7 0.85 (0.64–1.13) 0.92 (0.70–1.22)
Q4 32.1 0.76 (0.64–0.89) 0.73 (0.61–0.88) 13.8 1.04 (0.77–1.43) 0.79 (0.56–1.10) 15.5 0.76 (0.57–1.02) 0.84 (0.61–1.16)
Eur J Nutr
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was no association between the traditional Brazilian
pattern and excess weight/abdominal obesity in the pre-
sent study. Gimeno et al. [14], in a study of adults aged
30 years or more in Ribeirão Preto, also did not observe
an association between the “popular Brazilian” pattern
and BMI or WC. In general, the association of dietary
patterns with BMI or with obesity has been less evident
in women than in men [7].
The bar and the energy dense were the other two iden-
tified patterns. Patterns with similar compositions have
been designated in other ways in other studies: bar
“atherogenic” [47], “alcohol” [34] and “processed foods”
[25] and energy dense—“obesogenic” [14], “energy
dense” [12], “snacks” [31], “dairy products and desserts”
[25] and “cafeteria” [47]. However, in many other studies,
a type of pattern was identified that was called in most
cases “Western” [11, 15, 44, 45, 48, 49] or “unhealthy”
[33], representing a combination of foods included in the
bar and energy-dense patterns presented in our study.
Combined or separate, these patterns included foods rich
in sugars and saturated fats and were positively associated
with indicators of excess weight/obesity [12, 13, 45, 47,
48]. An inverse association of the “Western” pattern with
BMI was observed only in the study by Sánchez-Villegas
et al. [11].
In the present study, in agreement with data reported in
previous investigations [12, 13, 15, 16, 45], the bar pattern
was directly associated with excess weight/abdominal obe-
sity. On the other hand, the energy-dense pattern was associ-
ated with lower prevalence of excess weight, which may be
explained by the cross-sectional design of our study. This is
a limitation for the interpretation of the associations between
dietary patterns and anthropometric characteristics, because
of the potential reverse causality. There is also a possibility
of misreporting. It is known that obese individuals tend to
misreport their dietary habits more than the others [7]. In the
association under study, reverse causality may have contrib-
uted to the discordant findings, since obese individuals may
opt to consume healthier foods that do not belong to the
pattern defined as energy dense. The hypothesis of reverse
causality is supported by the lower frequency of unhealthy
behaviors (current smoking habit in both sexes) among the
individuals with more adherence to this pattern (Q4) com-
pared to those in the category of lower consumption (Q1), a
fact that also disagrees with data from other studies, which
show that unhealthy dietary patterns are related to other
unhealthy lifestyle behaviors [11, 25, 33]. This may indicate
a reversal of some unhealthy behaviors associated with obe-
sity among obese individuals that are trying to change their
lifestyle to lose weight. Another possible explanation for
Table 3 Non-adjusted and adjusted prevalence ratios (PR) and 95 %
confidence intervals (95 % CI) for the association of excess weight
and abdominal obesity with the traditional Brazilian pattern identi-
fied among 23- to 25-year-old adults of the Ribeirão Preto cohort (4th
phase: 2002–2004)
The dietary patterns were categorized into quartiles—Q1 (the lower quartile of the distribution represents the lowest adherence to the pattern),
Q2, Q3 and Q4 (the upper quartile of the distribution represents the highest adherence to the pattern)
* P value referring to the maximum likelihood ratio obtained by Poisson regression (P value for trend)
a Excess weight: body mass index—BMI 25 kg/m2
b Central obesity, waist circumference WC >80 cm for women and >90 cm for men
c Central obesity, waist hip ratio WHR >0.85 for women and >0.90 cm for men
d Adjusted for skin color, schooling, monthly family income, marital status, smoking habit, level of physical activity, and total caloric intake
(kcal/day) and the other dietary patterns
Sex Excess weight (Body Mass Index—BMI)aAbdominal obesity
(waist circumference—WC)bAbdominal obesity (waist hip ratio—WHR)c
% Non-adjusted PR
(95 % CI)
Adjusted PRd
(95 % CI)
% Non-adjusted PR
(95 % CI)
Adjusted PRd
(95 % CI)
% Non-adjusted PR
(95 % CI)
Adjusted PRd
(95 % CI)
Male P = 0.001 P = 0.003 P = 0.888 P = 0.727 P = 0.736 P = 0.545
Q1 53.9 Reference Reference 12.4 Reference Reference 20.7 Reference Reference
Q2 41.6 0.77 (0.64–0.93) 0.80 (0.65–0.97) 10.7 0.86 (0.53–1.42) 0.86 (0.51–1.45) 24.3 1.17 (0.84–1.64) 1.26 (0.89–1.78)
Q3 42.8 0.79 (0.66–0.96) 0.79 (0.65–0.97) 11.5 0.93 (0.57–1.51) 0.86 (0.51–1.45) 21.9 1.06 (0.75–1.49) 1.12 (0.77–1.63)
Q4 36.2 0.67 (0.55–0.82) 0.65 (0.51–0.82) 10.3 0.83 (0.50–1.37) 0.71 (0.40–1.27) 20.6 0.99 (0.70–1.41) 1.05 (0.70–1.59)
Female P = 0.111 P = 0.587 P = 0.001 P = 0.464 P = 0.001 P = 0.267
Q1 24.1 Reference Reference 9.0 Reference Reference 5.3 Reference Reference
Q2 28.3 1.18 (0.88–1.57) 0.95 (0.71–1.28) 10.2 1.13 (0.67–1.91) 0.93 (0.54–1.59) 6.4 1.22 (0.61–2.43) 0.89 (0.44–1.81)
Q3 33.1 1.37 (1.05–1.81) 0.93 (0.69–1.25) 18.1 2.00 (1.26–3.17) 1.30 (0.78–2.17) 13.5 2.57 (1.42–4.66) 1.51 (0.78–2.95)
Q4 31.3 1.30 (0.99–1.72) 0.81 (0.58–1.13) 18.5 2.04 (1.30–3.24) 1.55 (0.67–1.99) 12.1 2.29 (1.25–4.20) 1.16 (0.58–2.34)
Eur J Nutr
1 3
this finding is that those who consumed more energy-dense
foods ate fewer overall calories. However, the models were
adjusted for total energy intake. Thus, since the reverse asso-
ciation between the energy-dense pattern and excess weight/
obesity is independent of the amount of calories consumed,
this explanation seems unlikely.
Contrary to expectations, those who adhered more to the
healthy pattern did not present lower prevalence of excess
weight. This may be explained by the cross-sectional
design of the study. Another possibility is that those in
the upper quartile of adherence to the healthy pattern may
be consuming more calories derived from healthy foods.
However, the models were adjusted for total energy intake.
Thus, the lack of association between the healthy dietary
pattern and excess weight/obesity is independent of the
amount of calories consumed.
The results that show the daily portion sizes of the food
items that composed each of the four dietary patterns pro-
vide interesting data for comparisons. We observed that
women tended to consume higher portion sizes of food
items that compose the healthy pattern when compared to
men. It is interesting to note that rice and beans were the
two most important food items of the traditional Brazil-
ian pattern in comparison with the other food groups that
compose this pattern, as has been shown previously by their
factor loading [32]. We also found that the food items that
account to the alcohol content of the bar pattern were highly
consumed by both men and women. Finally we observed an
overall trend of a higher consumption of whole dairy prod-
ucts in comparison with low-fat ones, independently of the
dietary pattern.
Some limitations should be considered when interpret-
ing the findings of the present study. First, its cross-sectional
design did not permit us to observe the effect of dietary pat-
terns on the indicators of excess weight/obesity, but only to
establish associations between independent and dependent
variables, which may be due to reverse causality. Second, the
subjectivity of the method of principal component factor anal-
ysis, which requires the investigators to make various deci-
sions, includes how to group the food items and what to call
the patterns [15, 30]. Third, the limitations inherent to dietary
surveys such as errors in the estimate of food portions and
memory bias [30]. Moreover, the US food composition dataset
was used as a reference for almost all FFQ items. However,
factors such as seasons, climate, soil nutrients, food prepara-
tion and processing can make the nutritional composition of
Brazilian foods somewhat different from those included in the
US food composition table. It should also be pointed out that
selective losses occurred when the group of individuals fol-
lowed up in the fourth stage of the cohort study was compared
to the individuals who were not followed up. The follow-up
rates were slightly higher for women and for subjects whose
mothers had a higher schooling at the time of their birth.
However, although statistically significant, these differences
were small [20].
Considering the strengths, it should be pointed out that
the reproducibility and validity of the method used to
define the dietary patterns in the present investigation, i.e.,
PCA with data from the FFQ, were confirmed in a previ-
ous study [50]. Nutritionists with the aid of a photo album
applied the FFQ in order to facilitate estimation of portion
sizes. The consumption period investigated was the last
year, considering that longer recall periods may reduce the
likelihood of reverse causality [7]. In addition, all the sub-
jective decisions typical of the PCA method were based on
scientific knowledge and on an extensive literature review.
In conclusion, the traditional Brazilian (only among men)
and energy-dense (for both genders) patterns were associated
with a lower prevalence, whereas the bar pattern was associated
with a higher prevalence of excess weight and/or abdominal
obesity. The recommendation is to reduce consumption of alco-
holic beverages and foods composing the bar dietary pattern
and to encourage consumption of traditional foods of the Brazil-
ian diet (rice and beans) to reduce obesity among young adults.
Acknowledgments Financial support for the present study was
provided by Conselho Nacional de Desenvolvimento Científico e
Tecnológico (CNPq), by the University of São Paulo and by the
Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
(Grant Number 00/09508-7).
Author contributions Machado Arruda and Soraia Pinheiro par-
ticipated in the stages of data analysis and was responsible for writ-
ing the manuscript; Silva, Antônio Augusto Moura da participated in
the stage of data analysis and critical review of the manuscript; Kac,
Gilberto, Vilela, Ana Amélia Freitas, and Goldani, Marcelo contrib-
uted to the discussion and critical revision of the manuscript; Bettiol,
Heloisa and Barbieri, Marco Antônio were responsible for the origi-
nal design of the project and participated in the discussion and critical
revision of the manuscript.
Compliance with ethical standards
Conflict of interest All authors declare that there was no conflict of
interest.
Ethical aspects The study was conducted according to the directives
established in the Declaration of Helsinki, and all procedures involving
human being were approved by the Research Ethics Committee of the
University Hospital, Faculty of Medicine of Ribeirão Preto, University
of São Paulo, Brazil. All persons gave their informed consent prior to
their inclusion in the study.
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... To address these issues, several authors have proposed to study overall dietary patterns by considering how foods and nutrients are consumed together. The association between dietary patterns and obesity has been investigated in various studies (9)(10)(11)(12), showing an association between dietary patterns characterized mainly by foods high in fat, meat, dairy, and processed foods and obesity. Likewise, certain food groups have been shown to have a protective effect against obesity such as fruits, vegetables, and fish (11). ...
... The association between dietary patterns and obesity has been investigated in various studies (9)(10)(11)(12), showing an association between dietary patterns characterized mainly by foods high in fat, meat, dairy, and processed foods and obesity. Likewise, certain food groups have been shown to have a protective effect against obesity such as fruits, vegetables, and fish (11). ...
... We classified food and beverages in 25 groups according to their nutritional characteristics and cooking procedures, excluding plain water: (1) Dairy sweetened beverages, (2) Dairy non-sweetened beverages, (3) Sweetened non-dairy beverages, (4) Non-sweetened, non-dairy beverages, (5) Fruits, (6) Vegetables, (7) Non-beverage dairy products, (8) Legumes, (9) Cereal based salty dishes, (10) Corn based salty dishes, (11) Fast food, (12) Egg, (13) ...
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Introduction The prevalence of overweight and obesity in Mexican adults is very high. To identify the dietary characteristics related with this disorder is necessary to design intervention. The objective was to analyze the association between dietary patterns and obesity in Mexican adults. Materials and Methods This is a cross-sectional study carried out in Mexican adults (20–59 years old) participating in the Halfway National Health and Nutrition Survey 2016. Participants (n = 5,735) were classified as having normal weight, overweight-obesity and by their abdominal circumference as having abdominal obesity or not. With information from a 7-day food frequency questionnaire, we used a K-means cluster analysis to derive dietary patterns and calculated a healthy diet indicator to evaluate quality. The association between dietary patterns and overweight-obesity and abdominal obesity was assessed with Poisson regression models adjusted by some characteristics. Results We identified a Rural pattern characterized by tortilla, legumes and egg consumption; a Diverse pattern, characterized by fruits, meat and poultry, vegetables, and dairy beverages, and desserts; and a Westernized pattern, characterized by sweetened non-dairy beverages, fast food, bakery and cookies, candies and salty snacks. In men, Westernized pattern was associated with overweight-obesity (PR = 1.11, 95% CI 0.97–1.27), and abdominal obesity (PR = 1.15, 95% CI 1.00–1.33), the Diverse pattern was associated with overweight-obesity (PR = 1.18, 95% CI 1.00–1.38), and abdominal obesity (PR = 1.27, 95% CI 1.07–1.50), compared with the Rural pattern. In women, these dietary patterns were not associated with obesity. Discussion Westernized and Diverse patterns are associated with overweight and obesity and abdominal obesity in men. Gender-specific recommendations and surveillance are necessary in the Mexican adult population.
... p = 0.02). Another cross-sectional study analyzed data from 2034 adults included in the Ribeirão Preto (State of São Paulo) cohort and observed a direct association between a Bar dietary pattern (composed of alcoholic beverages, snacks, pork, sausage, eggs, bacon, seafood, and mayonnaise) and excess weight (BMI ≥ 25 kg/m 2 ) and elevated waist circumference in both sexes (Prevalence Ratio = 1.46 and 2.19, respectively) [13]. ...
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Hybrid methods are a suitable option for extracting dietary patterns associated with health outcomes. This study aimed to identify the dietary patterns of Brazilian adults (20–59 years old; n = 28,153) related to dietary components associated with the risk of obesity. Data from the 2017–2018 Brazilian National Dietary Survey were analyzed. Food consumption was obtained through 24 h recall. Dietary patterns were extracted using partial least squares regression, using energy density (ED), percentage of total fat (%TF), and fiber density (FD) as response variables. In addition, 32 food groups were established as predictor variables in the model. The first dietary pattern, named as energy-dense and low-fiber (ED-LF), included with the positive factor loadings solid fats, breads, added-sugar beverages, fast foods, sauces, pasta, and cheeses, and negative factor loadings rice, beans, vegetables, water, and fruits (≥|0.15|). Higher adherence to the ED-LF dietary pattern was observed for individuals >40 years old from urban areas, in the highest income level, who were not on a diet, reported away-from-home food consumption, and having ≥1 snack/day. The dietary pattern characterized by a low intake of fruits, vegetables, and staple foods and a high intake of fast foods and sugar-sweetened beverages may contribute to the obesity scenario in Brazil.
... This family is within the Firmicutes (Bacillota) phylum and includes a heterogenous group with diverse functions, with some studies suggesting a beneficial effect through mechanisms, such as enhanced SCFA production, and others finding associations with metabolic disease [10,56,57]. Interestingly, research indicates that a greater abundance of some Lachnospiraceae species is associated with obesity and altered lipid and glucose metabolism, while others, such as Lachnospiraceae NK4A136, have been described as protective against obesity, with potential anti-inflammatory effects and previously reported associations with greater adherence to healthy dietary patterns, such as a Mediterranean diet [56,58,59]. ...
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Obesity has been linked to the gut microbiome, epigenome, and diet, yet these factors have not been studied together during obesity treatment. Our objective was to evaluate associations among gut microbiota (MB), DNA methylation (DNAme), and diet prior to and during a behavioral weight loss intervention. Adults (n = 47, age 40.9 ± 9.7 years, body mass index (BMI) 33.5 ± 4.5 kg/m2, 77% female) with data collected at baseline (BL) and 3 months (3 m) were included. Fecal MB was assessed via 16S sequencing and whole blood DNAme via the Infinium EPIC array. Food group and nutrient intakes and Healthy Eating Index (HEI) scores were calculated from 7-day diet records. Linear models were used to test for the effect of taxa relative abundance on DNAme and diet cross-sectionally at each time point, adjusting for confounders and a false discovery rate of 5%. Mean weight loss was 6.2 ± 3.9% at 3 m. At BL, one MB taxon, Ruminiclostridium, was associated with DNAme of the genes COL20A1 (r = 0.651, p = 0.029), COL18A1 (r = 0.578, p = 0.044), and NT5E (r = 0.365, p = 0.043). At 3 m, there were 14 unique MB:DNAme associations, such as Akkermansia with DNAme of GUSB (r = −0.585, p = 0.003), CRYL1 (r = −0.419, p = 0.007), C9 (r = −0.439, p = 0.019), and GMDS (r = −0.559, p = 0.046). Among taxa associated with DNAme, no significant relationships were seen with dietary intakes of relevant nutrients, food groups, or HEI scores. Our findings indicate that microbes linked to mucin degradation, short-chain fatty acid production, and body weight are associated with DNAme of phenotypically relevant genes. These relationships offer an initial understanding of the possible routes by which alterations in gut MB may influence metabolism during weight loss.
... The constant (30.4375) was obtained as the sum of 3 common years + 1 leap year [3 × 365 + 366], divided by 48, and referred to the total number of months in a four-year period [4 × 12], corresponding to an average of 30.4375 days per month. A value of zero was assigned when the food was not consumed by the participant [29]. ...
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Background: Ultra-processed Food (UPF) consumption can play a role in the pathogenesis and progression of asthma. The aim of this study was to evaluate the association between the consumption of UPF and asthma. Methods: This cross-sectional study included 1857 adults aged 23-25 years from the Ribeirão Preto-SP birth cohort (1978/1979). The exposure variable was the consumption of UPF (expressed as their percentage contribution to energy intake-% total caloric value [%TCV] and their percentage contribution to the amount of food ingested-%grams), which was assessed with a food frequency questionnaire. Asthma was the outcome and was defined based on a positive methacholine challenge test and the presence of wheezing, chest tightness, or shortness of breath over the last 12 months. Poisson regression with robust variance was used to estimate the association between these variables. Unadjusted analyses and analyses adjusted for sex, age, household income, smoking, and physical activity level were performed. Results: The prevalence of asthma in the sample was 13.2%. The mean total consumption of UPF was 37.9 ± 11.2% TCV (corresponding to 35.1 ± 15.1% grams). There was no association between the consumption of UPF and asthma in adults. Conclusion: This study provides no evidence for an association between the consumption of UPF and asthma in young adults.
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O objetivo deste trabalho é analisar se os padrões alimentares estão associados à qualidade de vida e ao estresse no trabalho de servidores de uma Universidade Pública em Fortaleza, Ceará, utilizando-se de um estudo transversal com 324 servidores, com dados coletados por meio de questionário para caracterização sociodemográfica, ocupacional e estilo de vida, além da Escala de Estresse no Trabalho, Questionário Whoqol-bref e recordatório alimentar. Os padrões alimentares foram identificados por análise fatorial por componentes principais, seguida da rotação ortogonal varimax. A Regressão de Poisson com estimativa robusta da variância foi utilizada para estimar as razões de prevalências das variáveis em relação aos padrões alimentares. Foram identificados cinco padrões alimentares: misto, prudente, comum brasileiro, vegetais frutos do mar e infusos e densos em energia. O estresse no trabalho relacionado ao baixo apoio social e o ambiente físico com baixa qualidade de vida apresentaram associação estatística significativa com a menor adesão ao padrão misto, enquanto a alta demanda de estresse no trabalho apresentou associação com a menor adesão ao padrão comum brasileiro. Os achados evidenciaram influências no padrão alimentar associado aos fatores sociodemográficos, estresse no trabalho e baixa qualidade de vida nos servidores universitários.
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Objective This is a psychometric study aimed at proposing a scale for estimating the consumption of ultraprocessed foods using item response theory. Methods Food consumption data from a representative sample of 2515 adolescent individuals aged 18 and 19 from the third phase of the Ribeirão Preto, Pelotas, and São Luís Brazilian Birth Cohorts Consortium were used. The instrument used was a validated food frequency questionnaire. The selection of ultraprocessed foods items occurred through exploratory factor analysis. Items with factor loadings > 0.30 and commonality > 0.20 were applied in Samejima's graded response model and had unidimensionality (variance = 28.0%) as well as good quality of fit (comparative fit index and Tucker-Lewis index > 0.90 and root mean square error of approximation < 0.08). Kruskal-Wallis and Wilcoxon tests were used to assess latent trait levels in thirds (low, moderate, and high), according to food consumption variables. Results The information provided by the test covers the entire latent trait continuum, reinforcing its ability to estimate ultraprocessed foods consumption. Foods classified as in natura had a decline in consumption as the level of ultraprocessed foods consumption increased. Ultraprocessed foods were directly proportional to the latent trait (P < 0.05). The highest level of latent trait concentrated the highest median of total energy intake (P < 0.05). Conclusions The proposed ultraprocessed foods consumption scale presents an estimation of consistency and is a potential brief tool for use in assessing the consumption of this food group.
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Background: The ratios of fatty acids in different diets and their connection to chronic diseases including obesity and CVD have been researched. The current study set out to detect the dietary fatty acid patterns among Jordanian adults and their relationships with obesity indices. Methods: The data of 1096 adults were extracted from a household food consumption patterns survey study. Food intake was analyzed, and fatty acid patterns were determined. After anthropometric measurements, obesity indices were calculated. Results: Two fatty acid patterns were determined (High fatty acids from Protein and Olive Oil sources pattern, and the low Eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) pattern), explaining an overall variance of 41.78% and 24.31%, respectively. A significant difference in obesity scores through fatty acids pattern quartiles was only seen among female participants. Q4 of the "High fatty acids from Protein and Olive Oil sources" pattern had a significantly higher means of body mass index (25.12 ± 0.46; p = 0.015), waist-to-height-ratio (0.51 ± 0.01; p = 0.002), weight-adjusted waist index (10.13 ± 0.09; p = 0.021) and body roundness index (3.61 ± 0.15; p = 0.007) compared to Q1, while Q4 of "Low EPA and DHA" pattern had significantly higher means of waist circumference (WC) (86.28 ± 1.34) and a body shape index (ABSI) (10.12 ± 0.30) in comparison to Q1 (WC = 81.55 ± 1.08 and ABSI = 9.07 ± 0.22; p = 0.025, 0.013; respectively). In females, there was a significant association between the "High fatty acids from Protein and Olive Oil sources" pattern and all the obesity indices. Conclusion: Our results suggest that an increase in the high fatty acids from Protein and Olive Oil sources pattern is associated with a reduction in obesity indices, which is opposite to the low EPA and DHA pattern. This was a sex-specific association.
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Diet and Nutrition for Non-communicable Diseases in Low and Middle-Income Countries
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This study aimed to investigate the role sociodemographic variables as predictors of dietary patterns. It was hypothesized that demographic variables (gender, body mass index (BMI), cumulative grade point average, parents' Education, family type and family size) would strongly predict food preference categories (vegetables, fruits, meat/fish, dairy, snacks, starches). A purposive sample of 400 undergraduate students (200 males, 200 females) with an age range of 19-25 years was selected from public universities in Lahore. All research participants were requested to fill out the demographic form along with a Food Preferences questionnaire developed by (Smith, 2016) for young adults to measure the food preferences of adults. Results indicated that BMI significantly predicts three categories of food preferences scale (meat, dairy, and starches) CGPA significantly predicted vegetables, whereas it negatively predicted starches categories. Family size positively predicted vegetables, snacks, and starches categories. The family system positively predicted snack categories. Conclusively these findings might help develop food-based dietary guidelines in young adults. Keywords: Dietary patterns, Sociodemographic Variables, Gender, Young Adults
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Background: Few studies have assessed dietary patterns (DPs) and changes in these patterns over time in adults. This study aimed to investigate whether possible changes in DPs in two assessments are associated with obesity and excess body fat. Methods: Prospective study in which data were collected from 1,082 adults of a Brazilian birth cohort during two periods 15 years apart (T1: 2002-2004; T2: 2016-2017). Food consumption was assessed in both periods using validated food frequency questionnaires. Three similar DPs were found in the two assessments, and adherence to these patterns was classified as prudent, risk, or mixed. Nine DPs changes were defined. At T2, subjects with a body mass index ≥30.0 kg/m² were classified as obese, and men and women with a body fat (BF) percentage ≥25.0 and ≥35.0, respectively, as excess BF. A directed acyclic graph was built to adjust the association for confounding variables. Results: At T2, 34.4% of the subjects were obese and 61.4% had excess BF. In the adjusted analysis, the changes associated with obesity and excess BF were prudent-mixed (PR 1.55; 95%CI 1.04-2.29 and PR 1.35; 95%CI 1.10-1.65), risk-risk (PR 1.49; 95%CI 1.03-2.13 and PR 1.27; 95%CI 1.04-1.53), risk-mixed (PR 1.56; 95%CI 1.05-2.31 and PR 1.33; 95%CI 1.07-1.63), and mixed-risk (PR 1.61; 95%CI 1.10-2.35 and 1.29; 95%CI 1.04-1.58). Conclusion: A decline in food quality over time or stagnation in an unhealthy DP can lead to obesity and excess BF. This article is protected by copyright. All rights reserved.
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Objectives. To determine the dietary patterns of middle-aged Thais and their association with metabolic syndrome (MetS). Methods. The Thai National Health Examination Survey IV data of 5,872 participants aged ≥30-59 years were used. Dietary patterns were obtained by factor analysis and their associations with Mets were examined using multiple logistic regression. Results. Three major dietary patterns were identified. The first, meat pattern, was characterized by a high intake of red meat, processed meat, and fried food. The second, healthy pattern, equated to a high intake of beans, vegetables, wheat, and dairy products. The third, high carbohydrate pattern, had a high intake of glutinous rice, fermented fish, chili paste, and bamboo shoots. Respondents with a healthy pattern were more likely to be female, higher educated, and urban residents. The carbohydrate pattern was more common in the northeast and rural areas. Compared with the lowest quartile, the highest quartile of carbohydrate pattern was associated with MetS (adjusted odds ratio: 1.82; 95% CI 1.31, 2.55 in men and 1.60; 95% CI 1.24, 2.08 in women), particularly among those with a low level of leisure time physical activity (LTPA). Conclusion. The carbohydrate pattern with low level of LTPA increased the odds of MetS.
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Now viewed as its own scientific discipline, clinical trial methodology encompasses the methods required for the protection of participants in a clinical trial and the methods necessary to provide a valid inference about the objective of the trial. Drawing from the authors’ courses on the subject as well as the first author’s more than 30 years working in the pharmaceutical industry, Clinical Trial Methodology emphasizes the importance of statistical thinking in clinical research and presents the methodology as a key component of clinical research. From ethical issues and sample size considerations to adaptive design procedures and statistical analysis, the book first covers the methodology that spans every clinical trial regardless of the area of application. Crucial to the generic drug industry, bioequivalence clinical trials are then discussed. The authors describe a parallel bioequivalence clinical trial of six formulations incorporating group sequential procedures that permit sample size re-estimation. The final chapters incorporate real-world case studies of clinical trials from the authors’ own experiences. These examples include a landmark Phase III clinical trial involving the treatment of duodenal ulcers and Phase III clinical trials that contributed to the first drug approved for the treatment of Alzheimer’s disease. Aided by the U.S. FDA, the U.S. National Institutes of Health, the pharmaceutical industry, and academia, the area of clinical trial methodology has evolved over the last six decades into a scientific discipline. This guide explores the processes essential for developing and conducting a quality clinical trial protocol and providing quality data collection, biostatistical analyses, and a clinical study report, all while maintaining the highest standards of ethics and excellence.
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Background The aim of the present study was to identify the main dietary patterns among young adults and to investigate the association of socioeconomic and demographic factors, and social mobility with dietary patterns. Methods Data from the fourth follow-up of the 1978/79 Ribeirão Preto birth cohort study, Brazil, were used. A total of 2,061 young adults, whose mothers gave sociodemographic information at birth in 1978–79, provided sociodemographic and dietary data through a validated food frequency questionnaire in 2002–2004, when they were aged 23–25 years. Those whose caloric intake was outside of the ±3 standard deviation range were excluded, leaving 2,034 individuals. The dietary patterns were identified by principal component analysis followed by varimax orthogonal rotation. Poisson regression with robust estimation of variance was used to derive prevalence ratios (PR). Results Four dietary patterns were identified: healthy, traditional Brazilian, energy-dense and bar. In the adjusted analysis, individuals with higher schooling (≥12 years) in adult life (PR = 1.51, 95% CI: 1.07-2.14) showed greater adherence whilst men (PR = 0.79, 95% CI: 0.68-0.93) had lower adherence to the healthy pattern. The highest adherence to the traditional Brazilian pattern was found for men (PR = 2.39, 95% CI: 2.04-2.80), mullatos (PR = 1.41, 95% CI: 1.21-1.64), households with ≥2 members, and for those with children (PR = 1.28, 95% CI: 1.07-1.55) while individuals with higher schooling in adulthood (≥12 years) (PR = 0.47, 95% CI: 0.34-0.65), higher family income in adulthood (≥20 MW) (PR = 0.57, 95% CI: 0.33-0.99) and higher family income at birth (≥6.1 MW) showed lower adherence. The bar pattern was positively associated with male sex (PR = 2.96, 95% CI: 2.47-3.55) and low schooling (≤8 years). The energy-dense pattern was not associated with any of the variables investigated. Social mobility was associated with the traditional Brazilian pattern. Men and women who were not poor at birth and remained so in adulthood showed lower adherence to this pattern (PR = 0.70, 95% CI: 0.53-0.94 for men and PR = 0.40, 95% CI: 0.20-0.80 for women). Conclusions Four different dietary patterns were identified among young adults. Socioeconomic and demographic factors, and social mobility were associated with food choices.
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Aim: This article examined the association between dietary patterns and cardiovascular risk factors in Chinese older adults. Methods: For this study, older adults with one or more cardiovascular risk factors or a history of cardiovascular disease were randomly selected using health check medical records from the Changshu and Beijing Fangshan Centers for Disease Control and Prevention. Exploratory factor analysis and cluster analysis was used to extract dietary pattern factors. Log binomial regression analysis was used to analyse the association between dietary patterns and chronic disease related risk factors. Results: Four factors were found through factor analysis. A high level of internal consistency was obtained, with a high Cronbach's alpha coefficient of 0.83. Cluster analysis identified three dietary patterns: healthy diet, Western diet, and balanced diet. Findings in this sample of Chinese adults correspond to those reported in previous studies, indicating that a Western diet is significantly related to likelihood of having obesity, hypertension and the metabolic syndrome. The identification of distinct dietary patterns among Chinese older adults and the nutritional status of people with chronic diseases suggest that the three dietary patterns have a reasonable level of discriminant validity. Conclusions: This study provides evidence that a FFQ is a valid and reliable tool to assess the dietary patterns of individuals with chronic diseases in small- to medium-size urban and rural settings in China. It also validates the significant association between dietary pattern and cardiovascular disease risk factors, including body mass index, blood pressure, triglycerides, and metabolic conditions. Clinical diagnosis of chronic disease further confirmed this relationship in Chinese older adults.
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OBJECTIVE: To identify the dietary patterns of individuals living in the urban area of São Paulo, Brazil, and to investigate the association between these patterns and biological, sociodemographic, and behavioral risk factors for cardiovascular disease (CVD). METHOD: A cross-sectional epidemiological survey was carried out with a population-based probabilistic sample. The 2 100 participants of both sexes were from 15 to 59 years of age. A sociodemographic, behavioral, clinical, and dietary survey was applied to a systematic subsample of 700 people. Dietary patterns were determined using factor analysis based on a food frequency questionnaire. Covariance analysis was used to determine the associations between dietary patterns and sociodemographic and behavioral variables, and multilinear regression to determine the association between dietary patterns and biological factors. RESULTS: Four patterns were identified: (1) the "cafeteria" pattern (simple sugars and saturated fat), associated with areas of medium sociodemographic and environmental homogeneity, high school and university-level schooling, and alcohol consumption; positively associated with systolic (SAP) and diastolic (DAP) arterial pressure, body mass index (BMI) and waist-to-hip ratio (WHR); and negatively associated with HDL. (2) The "traditional" pattern (including cereals, beans, and infusion beverages) was predominant among women and in the age group over 50 years;associated with alcohol consumption, higher income, and areas of medium homogeneity; positively associated with glucose levels and BMI; and negatively associated with triglycerides and WHR. (3) The "modern" pattern (low intake of fat and simple sugars; fish) was predominant among individuals from high homogeneity areas, with higher income and university schooling;negatively associated with DAP, total cholesterol, glucose levels, and LDL. (4) The "atherogenic" pattern (saturated fat, addition of salt to cooked foods and alcohol consumption) was predominant among males; associated with elementary schooling, smoking, alcohol consumption, and areas of medium and low homogeneity; and positively associated with total cholesterol, triglycerides, glucose levels, BMI, and WHR. CONCLUSIONS: The results indicate an unfavorable trend in the dietary patterns of this population, since three of the four patterns identified (cafeteria, traditional, and atherogenic) are significantly associated with risk factors for CVD.
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Com objetivo de estudar a associação de padrões alimentares com obesidade, realizou-se estudo transversal de base populacional com amostra representativa de 1.026 mulheres (20 a 60 anos) em São Leopoldo, Rio Grande do Sul, Brasil. A obesidade geral foi avaliada pela utilização de índice de massa corporal (IMC > 30kg/m2) e a adiposidade abdominal, circunferência da cintura (CC> 88cm). Os padrões alimentares foram identificados por análise fatorial. Para análise multivariada, foi utilizada regressão de Poisson. Entre o total de mulheres, 18% (IC95%: 15,66-20,53) tinham obesidade geral e 23,3% (IC95%: 20,72-26,06) abdominal. Após controle para fatores de confusão, o baixo consumo do PA-frutas associou-se positivamente com o IMC (RP = 2,18; IC95%: 1,35-3,53; p = 0,001). Já o baixo consumo do PA-vegetais apresentou efeito protetor para o aumento nos níveis de IMC (RP = 0,64; IC95%: 0,47-0,86; p = 0,004) e o do PA-nozes/oleaginosas para o aumento na medida da CC (RP = 0,93; IC95%: 0,89-0,98; p = 0,008). O estudo aponta para a complexidade envolvida na relação entre padrões alimentares e obesidade e a necessidade de novos estudos, objetivando o melhor entendimento do tema.
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This cross-sectional study investigated the relationship between dietary patterns and body mass index among 514 women with different ethnic backgrounds who completed a validated food-frequency questionnaire. An exploratory factor analysis with orthogonal rotation started with 23 food items and resulted in four factors that accounted for 93% of the total variance. Confirmatory factor analysis with the 16 items that had factor loadings of at least 0.60 validated the four dietary patterns. The most significant dietary pattern, “meat,” was characterized by high intake of processed and red meats, fish, poultry, eggs, fats and oils, and condiments. The “vegetable” pattern loaded high on different vegetables, whereas the third pattern named “bean” was high in legumes, tofu and soy protein. The major components of the “cold foods” pattern were fruit, fruit juice and cold breakfast cereals. Although the “meat” pattern was predominant among Hawaiians and the “bean” pattern very common among Chinese and Japanese women, factors two and four were not related to ethnicity. After adjustment for daily energy intake, the “meat” pattern was positively associated with body mass index (r = 0.17, P = 0.0001), whereas the other three patterns showed negative relationships to body mass index (r = −0.076, P = 0.084, r = −0.13, P = 0.003, and r = −0.13, P = 0.003) for vegetables, beans and cold foods, respectively. The associations were similar in direction and magnitude for all ethnic groups. The study results support the ideas that choosing the right foods may be important in weight control and that food-based dietary patterns may be useful in dietary counseling.
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Purpose: To identify gestational dietary patterns and evaluate the association between these patterns and the blood pressure (BP) rate of change during pregnancy and the postpartum. Methods: Prospective cohort study composed of 191 healthy pregnant women. Systolic BP (SBP) and diastolic BP (DBP) were obtained at the 5th-13th, 20th-26th, 30th-36th gestational weeks, and with 30-45 days postpartum. A food frequency questionnaire administered at the 30th-36th gestational week was used to measure dietary intake during pregnancy. Principal component analysis was performed to identify the dietary patterns. A longitudinal linear mixed-effects regression model was used to evaluate the association between the dietary patterns and BP (adjusted for time elapsed after conception and the women's age, education, parity, body mass index and total energy intake). Results: Three gestational dietary patterns were identified: healthy, common-Brazilian and processed. SBP/DBP mean values (SD) were 110.1 (9.0)/66.9 (7.5), 108.7 (9.0)/64.9 (6.7), 111.3 (9.2)/67.0 (6.9) and 115.0 (10.7)/73.7 (8.6) mmHg at the first, second and third gestational trimesters and postpartum, respectively. Women with higher/lower adherence to the processed pattern presented SBP of 117.9 and 113.0 mmHg (P = 0.037), respectively, during postpartum. No association was found between any of the three dietary patterns and SBP in the multiple longitudinal linear regression models, whereas 1 SD increase in the common-Brazilian pattern was associated with a small change of DBP (β = 0.0006; 95 % CI 4.66e-06, 0.001; P = 0.048). Conclusion: The three dietary patterns identified revealed no association with changes of SBP and DBP levels during pregnancy and at early postpartum in this sample of healthy Brazilian women.