Jaap Seidell

Jaap Seidell
Vrije Universiteit Amsterdam | VU · IHS-Institute of Health Sciences

PhD

About

704
Publications
154,312
Reads
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49,039
Citations
Additional affiliations
April 2002 - present
Vrije Universiteit Amsterdam
Position
  • professor nutrition and health
September 1999 - September 2015
Amsterdam University Medical Center
Position
  • Professor (Full)
January 1992 - April 2002
National Institute for Public Health and the Environment (RIVM)
Position
  • Head of Department

Publications

Publications (704)
Article
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Background Given the importance of the first 1000 days of a child’s life in terms of laying the foundations for healthy growth and development, parents are a logical target group for supporting health-related practices with regard to young children. However, little attention is paid to the influence of the wider social community on the health and d...
Article
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Despite policy intentions and many interventions aimed at reducing socioeconomic health inequalities in recent decades in the Netherlands and other affluent countries, these inequalities have not been reduced. Based on a narrative literature review, this paper aims to increase insight into why socioeconomic health inequalities are so persistent and...
Article
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Introduction The long-term effects of interventions aiming to achieve substantial, sustainable weight loss maintenance have been disappointing. Most people regain their lost weight over time but some seem to be able to maintain their weight loss. We are following the experiences of patients over time prospectively. This study forms the baseline to...
Article
Aims and objectives: The self-performance of a Five-Times-Sit-To-Stand (FTSTS)-test, without the usual supervision by a medical professional, provides valuable opportunities for clinical practice and research. This study aimed: (1) to determine the validity of the self-performed FTSTS test in comparison to a supervised reference test and (2) to de...
Preprint
Background: Many healthcare professionals (HCPs) feel uncomfortable and incompetent to talk about weight with children with overweight and obesity and their parents. To optimally target interventions that can improve obesity care for children, we assessed the self-efficacy (SE) and perceived barriers (PBs) of Dutch HCPs in regard to talking about w...
Article
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Purpose: In light of the increasing prevalence of overweight and obesity, understanding the experiences, strategies and challenges encountered when trying to achieve substantial, sustainable weight loss is an important area to investigate. We systematically evaluated qualitative studies focusing on the accounts of individuals who have achieved sust...
Article
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Background Childhood obesity can affect physical as well as psychosocial wellbeing. Therefore, childhood obesity care aims to improve all dimensions of health related quality of life (HRQoL). HRQoL can be measured with the generic questionnaire PedsQL4.0 and the weight-specific IWQOL-Kids. In the Netherlands, HRQoL assessment is conducted by the co...
Article
Purpose: The first two years of a child's life have been found to be crucial for optimal growth and development. Support from healthcare professionals is especially important during this period. This study explored the perspectives of parents with children aged 0-2 years and healthcare professionals concerning parental needs and support provided b...
Article
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To ensure that health behavior interventions for children living in low socioeconomic position (SEP) neighborhoods are in line with children’s wishes and needs, participation of the children in the development, implementation, and evaluation is crucial. In this paper, we show how children living in three low-SEP neighborhoods in the Netherlands can...
Article
The purpose of this article is to describe a series of recent studies from the authors and many of their colleagues aimed at improving the food environments of adolescents in the Netherlands and thereby improving their food choices. These studies are performed in the wider context of national and local strategies for the prevention of overweight an...
Article
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Background The majority of postmenopausal breast cancer (PMBC) survivors do not adhere to lifestyle recommendations and have excess body weight. In this group, this is associated with poorer health-related quality of life and an increased risk of type II diabetes mellitus, cardiovascular disease, second primary cancers, cancer recurrences, and mort...
Article
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This study investigated ethnic differences in childhood body mass index (BMI) in children from Dutch and Turkish descent and the role of infant feeding factors (breastfeeding duration, milk feeding frequency, as well as the timing, frequency and variety of complementary feeding (CF)). We used data from 244 children (116 Dutch and 128 Turkish) parti...
Article
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Background The causes and consequences of childhood obesity are complex and multifaceted. Therefore, an integrated care approach is required to address weight-related issues and improve children’s health, societal participation and quality of life. Conducting a psychosocial and lifestyle assessment is an essential part of an integrated care approac...
Article
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Introduction: The Netherlands Nutrition Centre developed guidelines to improve the availability and accessibility of healthier food products in Dutch canteens. This paper describes the development of an implementation plan to facilitate implementation of Guidelines for Healthier Canteens in Dutch secondary schools. Materials and Methods: In coopera...
Article
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Background The first 2 years of a child’s life have been found to be crucial to healthy growth and development. Parent support groups can help parents to promote health-related behaviours during this crucial period. The aim of this study was to explore the experiences of parents who participated in a parent support group (Parent-Child Meetings) whi...
Article
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Limited and inconsistent evidence exists on the associations between dietary patterns and overweight during childhood. The present study describes dietary patterns of three-year-old Dutch children and associations between childhood overweight and body mass index (BMI) development between 3 and 10 years. In the GECKO Drenthe birth cohort (N = 1306),...
Article
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Objective To investigate to what extent promotions in Dutch supermarket sales flyers contribute to a healthy diet and whether there are differences between supermarket types. Design A cross-sectional study investigating promotions on food and beverages (n=7825) in supermarket sales flyers from thirteen Dutch supermarket chains (8-week period), inc...
Article
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Objective: To explore the current intake/changed dietary habits being associated with risk of cardiovascular disease after migration from Pakistan to the Netherlands. Methods: Data collection started in March 2012 and ended in July 2013. Self-administered survey with respect to cardiovascular disease and dietary intake was filled by 154 adult Pakis...
Article
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Samenvatting De aanpak Zwolle Gezonde Stad heeft succesvol gezondheidsverschillen teruggedrongen. Het doel van dit onderzoek is om te achterhalen wat volgens verschillende betrokken professionals de kernelementen van Zwolle Gezonde Stad zijn. Daartoe is een kwalitatief onderzoek uitgevoerd. Semigestructureerde interviews zijn gehouden met 29 profes...
Article
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Due to mounting concerns about the psychological well-being of university students, it is useful to consider whether and how the quality of the physical study environment can improve students’ functioning. The present study examined the presence of potted plants within a university library study room on students’ self-reported mood (i.e., fatigue a...
Article
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Background Milk feeding type (exclusive breastfeeding [EBF], formula feeding or mixed feeding) and timing of complementary feeding (CF) have been associated with infant growth. However, studies evaluating their combined role, and the role of ethnicity, are scarce. We examined associations of feeding patterns (milk feeding type combined with timing...
Article
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Purpose: Lifestyle interventions can be effective in the management of overweight and obesity in children. However, ineffective guidance towards interventions and high attrition rates affect health impacts and cost effectiveness. The aim of this study was to gain insight into the factors influencing participation, in particular guidance towards, ad...
Article
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Most snacks displayed at supermarket checkouts do not contribute to a healthy diet. We investigated the effects of introducing healthier snack alternatives at checkouts in supermarkets on purchasing behavior. In Study 1, we investigated the effect of completely substituting less healthy with healthier snacks (one supermarket). In Study 2, we invest...
Article
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Background: COVID-19 is a global challenge to healthcare. Obesity is common in patients with COVID-19 and seems to aggravate disease prognosis. In this review we explore the link between obesity, chronic disease, lifestyle factors and the immune system, and propose societal interventions to enhance global immunity. Search Strategy and Selection Cri...
Article
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Objective: To explore the current intake/changed dietary habits being associated with risk of cardiovascular disease after migration from Pakistan to the Netherlands. Methods: Data collection started in March 2012 and ended in July 2013. Self-administered survey with respect to cardiovascular disease and dietary intake was filled by 154 adult Pa...
Article
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Background Since 2010, the Zwolle Healthy City approach, an integrated community-based approach, has been implemented in the Dutch municipality of Zwolle. This approach is proven successful in reducing health inequalities. However, the key elements of this approach are not clear. The current study aimed to identify key elements of this successful l...
Article
Supermarkets located near schools influence adolescents' food consumption. The aims of this study were (1) to measure dietary behaviors during school hours, (2) to investigate the effect of a nutrition peer-education intervention in supermarkets within walking distance to secondary schools on nutritional knowledge and attitudes toward healthy eatin...
Article
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This study reviews the evidence on the effects of nature in the study environment on well-being, academic outcomes, and outcomes related to possible explanatory pathways among students in secondary and tertiary education. The protocol was preregistered at Prospero (CRD42019126718). A systematic search of two databases yielded 3410 articles, of whic...
Article
Sarphati Amsterdam is a collaboration between the city of Amsterdam and four Amsterdam research institutions, focusing on innovative multidisciplinary research beneficial to preventing non-communicable diseases effectively and sustainably. With the Sarphati Cohort, Sarphati Amsterdam has established a dynamic cohort study that systematically monito...
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Background: As in many other countries around the world, the Netherlands has a high prevalence of overweight and obesity in children. About 1 in 7 of children aged 2-19 years has either overweight or obesity. Summary: In this paper the national and local activities aimed at the prevention and management of obesity in children and adolescents in...
Article
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The first two years of a child’s life are a critical period in preventing several lifestyle-related health problems. A qualitative study was conducted to explore parental experiences and perspectives in relation to lifestyle-related child-rearing practices in order to minimize risk factors at an early stage. Data were collected through interviews (...
Article
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We developed an implementation plan including several components to support implementation of the “Guidelines for Healthier Canteens” in Dutch secondary schools. This study evaluated the effect of this plan on changes in the school canteen and on food and drink purchases of students. In a 6 month quasi-experimental study, ten intervention schools (...
Article
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The current study explored the preferences for and knowledge of weight-based terminology used in healthcare-related conversations, and descriptively compared the preferences of children, parents and healthcare professionals. In total, 86 children with overweight or obesity, 90 parents of children with overweight or obesity and 572 healthcare profes...
Article
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Background: The aim of the study was to assess changes in the health-related quality of life (HRQOL) and weight status of children with overweight and obesity after participating in a 10-week family-based combined lifestyle group intervention in their community. Methods: In total, 340 children with overweight or obesity aged between 7 and 13 years...
Article
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This paper describes the design of the LIKE programme, which aims to tackle the complex problem of childhood overweight and obesity in 10–14-year-old adolescents using a systems dynamics and participatory approach. The LIKE programme focuses on the transition period from 10-years-old to teenager and was implemented in collaboration with the Amsterd...
Article
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Background: Early antibiotic exposure may be contributing to the onset of childhood allergies. The main objective of this study was to conduct a systematic review on the relationship between early life antibiotic exposure and childhood asthma, eczema and hay fever. Methods: Pubmed and Embase were searched for studies published between 01-01-2008...
Preprint
Full-text available
Background Most foods displayed at supermarket checkouts are unhealthy and do not support healthy purchases. This study investigates the sales effects of introducing healthier alternatives at supermarket checkouts. Methods We performed two real-life quasi-experimental studies in supermarkets located in a disadvantaged urban area in the Netherlands...
Article
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Background: Since there is a shift from eating lunch at home to eating lunch at primary schools in the Netherlands, providing a school lunch may be an important opportunity to improve the diet quality of Dutch children. Therefore, the aim of this Healthy School Lunch project is to encourage healthy eating behavior of children at primary schools by...
Article
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Background: The checkout area in supermarkets is an unavoidable point of purchase where impulsive food purchases are likely to be made. However, the product assortment at the checkout counters is predominantly unhealthy. The aim of this real life experiment was to investigate if unhealthy food purchases at checkout counters in supermarkets in depr...
Article
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Background Supermarkets are a key point of purchase for groceries and can therefore have a considerable influence on eating behaviours. Evidence suggests that descriptive social norm nudges in shopping trolleys can be effective in stimulating vegetable purchases in supermarkets. Objective We investigated the effect of a combination of two nudging...
Article
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Objective Management of diet-related chronic diseases may benefit from improved nutrition education of medical students. This study aims to investigate the effects of a nutrition education course on nutritional knowledge and intentions towards nutritional counselling in Dutch medical students. Design This is a pre–post intervention study with a co...
Article
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Prior work has shown beneficial effects of indoor nature (e.g. potted plants, green walls) on attention, health, and well-being for various groups, including students. The aim of this paper was to examine whether these effects also emerge when students attend a single lecture in a classroom with indoor nature. Three longitudinal field experiments,...
Article
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Background: Although healthcare professionals often consider body weight a sensitive and difficult topic to discuss with children, a contextualized and comprehensive understanding of youth perspectives on weight-related words used in healthcare has yet to be established. This qualitative study aims to explore perspectives of Dutch children on the...
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Despite decades of unequivocal evidence that waist circumference provides both independent and additive information to BMI for predicting morbidity and risk of death, this measurement is not routinely obtained in clinical practice. This Consensus Statement proposes that measurements of waist circumference afford practitioners with an important oppo...
Article
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Objective To investigate the effects of providing free fruit and snack vegetables at a university on students’ fruit intake, snack vegetable intake and total vegetable intake. Design Free fruit and raw snack vegetables (e.g. bite-sized tomatoes) were provided in a stand in the form of a miniature wooden house located in the central hall of the uni...
Article
This study aimed to assess the evidence regarding the relationship between early-life antibiotic exposure and childhood overweight/obesity by reviewing observational studies on prenatal antibiotic exposure and systematic reviews on infant antibiotic exposure. A search in Pubmed, Embase and Google Scholar covering the period 1st January till 1st Dec...
Article
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The Netherlands Nutrition Centre has developed ‘Guidelines for Healthier Canteens’. To facilitate their implementation, implementation tools were developed: stakeholders’ questionnaires, the ‘Canteen Scan’ (an online tool to assess product availability/accessibility), a tailored advisory meeting/report, communication materials, establishment of an...
Article
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Background: Lunch is an important part of a healthy diet, which is essential for the development, growth and academic performance of school-aged children. Currently there is an increasing number of Dutch primary schoolchildren who are transitioning from eating lunch at home to school. There is limited knowledge about the current quality of the lun...
Article
Full-text available
Introduction: To encourage healthier food/drink choices, the “Guidelines for Healthier Canteens” were developed by the Netherlands Nutrition Centre. This paper describes (1) how we developed a plan to support implementation of the “Guidelines for Healthier Canteens” in Dutch secondary schools, and (2) how we will evaluate this plan on process and e...
Article
Findings from epidemiological studies over the past 30 years have shown that visceral adipose tissue, accurately measured by CT or MRI, is an independent risk marker of cardiovascular and metabolic morbidity and mortality. Emerging evidence also suggests that ectopic fat deposition, including hepatic and epicardial fat, might contribute to increase...
Article
Background: Obesity is a worldwide healthcare challenge. Recent studies have shown an association of viral and bacterial infection with obesity. However, studies on the association between parasitic infections and obesity are scarce. In this ecological study, we examined the relationship between infection with intestinal helminths and protozoa with...
Article
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Background Healthier dietary patterns are generally more costly than less healthy patterns, but dietary costs may be more important for dietary quality in lower educated and ethnic minority groups. The aim of this study was to investigate the association between dietary costs and dietary quality and interactions with ethnicity and socioeconomic pos...
Article
Many chronic non-communicable diseases are at least partly caused by unhealthy lifestyles; an example is type 2 diabetes mellitus (T2DM). Lifestyle interventions have been shown to substantially reduce the risk of T2DM in high-risk patients. The risk reduction diminishes over time, but a long-term (> ten years) reduction is still achieved. Better c...
Article
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Background: To improve the availability and accessibility of healthier food and drinks in schools, sports and worksites canteens, national Guidelines for Healthier Canteens were developed by the Netherlands Nutrition Centre. Until now, no tool was available to monitor implementation of these guidelines. This study developed and assessed the conten...
Data
Figure S1. Selection of the study population Table S1. Risk groups by age at complementary feeding (n = 4133) and duration of exclusive breastfeeding (n = 4080) Table SII. Associations between age at complementary feeding and BMI‐SDS at age 5–6 years by risk groups, linear regression, adjusted models Table SIII. Associations between duration of...
Article
Full-text available
Objective To investigate fruit and vegetable (F&V) intakes of university students and associated demographic and lifestyle characteristics, and students’ perceptions of F&V availability and F&V intervention strategies in the university environment. Design Cross-sectional questionnaire data were collected; F&V intakes were measured using a food fre...