• Home
  • Ranadip Chowdhury
Ranadip Chowdhury

Ranadip Chowdhury
Centre for Health Research and Development, Society for Applied Studies, New Delhi, India · Nutrition

MBBS MD PhD

About

119
Publications
57,548
Reads
How we measure 'reads'
A 'read' is counted each time someone views a publication summary (such as the title, abstract, and list of authors), clicks on a figure, or views or downloads the full-text. Learn more
8,328
Citations
Introduction
Dr. Ranadip Chowdhury is a public health researcher who did M.B.B.S. from NRS Medical College, Kolkata in 2008. He also holds an M.D., in Community Medicine (Public Health) from R.G. Kar Medical College, Kolkata. He completed PhD on role of vitamin D in child health, anemia, growth and neurodevelopment from University of Bergen in 2020. His interest areas are Maternal and Child Health, Epidemiology, Data science, Health system and Nutrition.
Additional affiliations
September 2013 - present
Centre for Health Research and Development
Position
  • Young Investigator
July 2013 - August 2013
World Health Organisation-India
Position
  • Surveillance Medical Officer
June 2010 - June 2013
R.G.Kar Medical College
Position
  • Junior Resident
Education
January 2016 - December 2019
University of Bergen, Norway
Field of study
  • Global Health and Primary Care
June 2010 - June 2013
R.G.Kar Medical College
Field of study
  • Community Medicine
August 2002 - January 2008

Publications

Publications (119)
Article
Despite its established benefits, breastfeeding is no longer a norm in many communities. Multifactorial determinants of breastfeeding need supportive measures at many levels, from legal and policy directives to social attitudes and values, women's work and employment conditions, and health-care services to enable women to breastfeed. When relevant...
Article
Full-text available
The importance of breastfeeding in low-income and middle-income countries is well recognised, but less consensus exists about its importance in high-income countries. In low-income and middle-income countries, only 37% of children younger than 6 months of age are exclusively breastfed. With few exceptions, breastfeeding duration is shorter in high-...
Article
Full-text available
To evaluate the effect of breastfeeding on long (breast carcinoma, ovarian carcinoma, osteoporosis and type-2 diabetes mellitus) and short term (lactational amenorrhea, postpartum depression, postpartum weight change) maternal health outcomes. A systematic literature search was conducted in PUBMED, Cochrane Library and CABI databases. Outcome estim...
Article
Full-text available
Background Recent studies have demonstrated a relationship between poor vitamin D status and respiratory infections and diarrhea among young children. Acute lower respiratory infections (ALRI) and diarrhea are among the two most important causes of death in under-5 children. In this paper, we examined the extent to which vitamin-D deficiency (<10 n...
Article
Full-text available
Objective To examine gender differences in infant survival on the first day of life, in the first week of life, and in the neonatal and post-neonatal periods by socio-demographic and economic variables. Design Secondary data analysis was performed on data from a cluster randomised trial on the effect of implementation of the Integrated Management o...
Article
Full-text available
Chronic and harmful substance use is associated with a cluster of harms to health, including micronutrient deficiencies. Maintaining adequate levels of vitamin D is important for musculoskeletal and other aspects of health. In this prospective longitudinal cohort study, 666 participants drawn from outpatient opioid agonist therapy (OAT) clinics and...
Article
Full-text available
OBJECTIVES To assess effects of enteral “low” dose (daily doses of ≤10 000 international unit) vitamin A supplementation compared with no vitamin A supplementation in human milk-fed preterm and low birth weight (LBW) infants. DATA SOURCES Cochrane Central Register of Controlled Trials; Medline, Embase, Scopus, Web of Science, CINAHL from inception...
Article
Full-text available
BACKGROUND AND OBJECTIVES Iron is needed for growth and development of infants globally, but preterm and low birth weight (LBW) infants are at risk for severe iron deficiencies. To assess the effect of enteral iron supplementation on mortality, morbidity, growth, and neurodevelopment outcomes in preterm or LBW infants fed human milk. Secondary obje...
Article
Full-text available
BACKGROUND AND OBJECTIVES Evidence on the effect of zinc supplementation on health outcomes in preterm or low birth weight (LBW) infants is unclear. We estimated the effect of enteral zinc versus no zinc supplementation in human milk fed preterm or LBW infants on mortality, growth, morbidities, and neurodevelopment. METHODS Data sources include Pu...
Article
OBJECTIVES To assess effects of calcium or phosphorous supplementation compared with no supplementation in human milk-fed preterm or low birth weight infants. METHODS Data sources include Cochrane Central Register of Controlled Trials, Medline and Embase. We included Randomized controlled trials (RCTs) and non-randomized trials (quasi-randomized)....
Article
OBJECTIVES To assess effects of supplementation with 3 or more micronutrients (multiple micronutrients; MMN) compared to no MMN in human milk-fed preterm and low birth weight (LBW) infants. RESULTS Data on a subgroup of 414 preterm or LBW infants from 2 randomized controlled trials (4 reports) were included. The certainty of evidence ranged from l...
Article
BACKGROUND AND OBJECTIVES Many preterm and low birth weight (LBW) infants have low vitamin D stores. The objective of this study was to assess effects of enteral vitamin D supplementation compared with no vitamin D supplementation in human milk fed preterm or LBW infants. METHODS Data sources include Cochrane Central Register of Controlled Trials,...
Article
Full-text available
Background Low birth weight (LBW), including preterm birth (PTB) and small for gestational age (SGA), contributes a significant global health burden. We aimed to summarise current evidence on the effect of preconception and periconception interventions on LBW, SGA and PTB. Methods In this systematic review and meta-analysis, we searched PubMed, Em...
Article
Folate and vitamin B12 are essential for growth. Our objective was to estimate their long-term effects on linear growth in North Indian children. This is a follow-up study of a factorial designed, double-blind, randomized placebo-controlled trial in 1,000 young children. Starting at 6-30 months of age, we gave folic acid (∼2 RDAs), vitamin B12 (∼2...
Article
Objectives Deficiencies of vitamin B12 and folate in childhood are associated with cardiovascular risk in later life. The main objective of this analysis is to measure the effect of vitamin B12 and/or folic acid supplementation in children between 6 to 30 months of age on biochemical markers of cardiovascular risk at school age. Methods This is a...
Preprint
Background Hypothyroidism is the commonest endocrine disorder of pregnancy, with known adverse feto-maternal outcomes. There is limited data on population-based prevalence, risk factors and outcomes associated with treatment of hypothyroidism in early pregnancy. We conducted analysis on data from an urban and peri-urban low to mid socioeconomic pop...
Article
Full-text available
Substance use disorder (SUD) is associated with poor nutrition. Vitamin B9, or folate, is an important micronutrient for health. The aim of this prospective longitudinal cohort study was to assess serum folate levels among people with SUD and to investigate the impact of factors related to substance use severity on folate status. Participants were...
Article
Full-text available
People with severe substance use disorder (SUD) have a higher burden of micronutrient deficiency compared with the general population. The aim of this study was to investigate vitamin B12 status and risk factors of deficiency related to substance use, opioid agonist therapy (OAT), as well as hepatitis C infection and liver fibrosis. In this prospec...
Article
Full-text available
Background The impact of infertility on mental, emotional, physical and sexual health is grave, particularly in a pronatalist society. Literature is replete with evidence of wide ranging psychosocial consequences of infertility in women, indicating the need for identifying the gaps and designing appropriate context specific interventions to improve...
Article
Full-text available
Introduction The Global Health Sector Strategy on sexually transmitted infections (STIs), endorsed by the World Health Assembly in 2016 aims to end STIs as public health threat by 2030. WHO conducts global estimates of prevalence to monitor progress towards achieving the same. However, limited laboratory confirmed data exist of STIs and reproductiv...
Preprint
Background: People with severe substance use disorder (SUD) have a markedly higher burden of micronutrient deficiency compared to the general population. There is limited data available about vitamin B12 status among people with severe SUD. The aim of this study is to investigate vitamin B12 status and risk factors of deficiency related to substanc...
Article
Full-text available
Background The burden of gestational diabetes mellitus (GDM) appears to be increasing in India and may be related to the double burden of malnutrition. The population-based incidence and risk factors of GDM, particularly in lower socio-economic populations, are not known. We conducted analyses on data from a population-based cohort of pregnant wome...
Article
Full-text available
Background Postpartum family planning (PPFP) helps women space childbirths, increase exclusive breastfeeding and prevent unintended pregnancies, leading to reduction in maternal, infant and child morbidities and mortality. Unmet need of family planning is highest among women in the postpartum period due to lack of knowledge, cultural and religious...
Article
Full-text available
Objective: To examine prevalence, risk factors, and consequences of maternal severe thinness in India. Methods: This mixed methods study analyzed data from the Indian National Family Health Survey (NFHS)-4 (2015-2016) to estimate the prevalence of and risk factors for severe thinness, followed by a desk review of literature from India. Results:...
Article
Full-text available
This paper answers research questions on screening and management of severe thinness in pregnancy, approaches that may potentially work in India, and what more is needed for implementing these approaches at scale. A desk review of studies in the last decade in South Asian countries was carried out collating evidence on six sets of strategies like b...
Article
Full-text available
This paper answers research questions on screening and management of severe thinness in pregnancy, approaches that may potentially work in India, and what more is needed for implementing these approaches at scale. A desk review of studies in the last decade in South Asian countries was carried out collating evidence on six sets of strategies like b...
Article
Full-text available
Background: A large proportion of infants in low- and middle-income countries are stunted. These infants are often fed complementary foods that are low-quality, primarily in terms of protein and micronutrients. Objectives: We aimed to test 2 milk-cereal mixes supplemented with modest and high amounts of protein during 6-12 mo of age, compared wi...
Article
Full-text available
Despite the high prevalence of inadequate gestational weight gain (GWG) and adverse pregnancy outcomes, very few studies have addressed the association between GWG and pregnancy outcomes in South Asia. Our objectives were to estimate the prevalence of GWG during the second and third trimesters within, below and above the Institute of Medicine (IOM)...
Preprint
Full-text available
Background: The burden of gestational diabetes mellitus (GDM) appears to be increasing in India and may be related to the double burden of malnutrition. The population-based incidence and risk factors of GDM, particularly in lower socio-economic populations, are not known. We conducted analyses on data from a population-based cohort of pregnant wom...
Article
Full-text available
Background Weight for length z-score (WLZ) < − 3 is currently used to define severe acute malnutrition (SAM) among infants. However, this approach has important limitations for infants younger than 6 months of age as WLZ cannot be calculated using WHO growth standards if infant length is < 45 cm. Moreover, length for age z-score (LAZ) and weight fo...
Article
Full-text available
Background: In lower-middle-income settings, growth faltering in the first 6 mo of life occurs despite exclusive breastfeeding. Objective: The aim was to test the efficacy of an approach to improve the dietary adequacy of mothers during lactation and thus improve the growth of their infants. Methods: Eligible mother-infant dyads (infants ≤7 d...
Article
Objective: To identify predictors of recovery in children with uncomplicated severe acute malnutrition (SAM). Design: This is a secondary data analysis from an individual randomised controlled trial, where children with uncomplicated SAM were randomised to three feeding regimens, namely RUTF-C, RUTF-L, or A-HPF, under two age strata (6–17 months a...
Article
Full-text available
High-quality protein has been associated with child growth; however, the role of the amino acid cysteine remains unclear. The aim was to measure the extent to which plasma total cysteine (tCys) concentration is associated with anthropometric status in children aged 6–30 months living in New Delhi, India. The study was a prospective cohort study inc...
Article
Full-text available
Background Faltering of growth in early life has been recognized as a public health challenge among Indian babies. A two-day consultation on growth faltering in early infancy was organized to examine the data and evidence on identification and management of early growth failure and to identify knowledge gaps and future areas of research. The consul...
Thesis
Full-text available
Background: Vitamin D deficiency is one of the most commonly under diagnosed micronutrient deficiencies in the world. Both animal and human studies suggest that vitamin D plays an important role in innate and adaptive immunity, erythropoiesis and neurodevelopment, in addition to its osteoblastic activities. Objectives: To estimate the associations...
Preprint
Full-text available
Background Weight for length z-score (WLZ) <- 3 is currently used to define severe acute malnutrition (SAM) among infants. However, this approach has important limitations for infants younger than 6 months of age as WLZ cannot be calculated using WHO growth standards if infant length is <45 cm. Moreover, length for age z-score (LAZ) and weight for...
Preprint
Full-text available
Background Weight for length z-score (WLZ) <- 3 is currently used to define severe acute malnutrition (SAM) among infants. However, this approach has important limitations for infants younger than 6 months of age as WLZ cannot be calculated using WHO growth standards if infant length is <45 cm. Moreover, length for age z-score (LAZ) and weight for...
Article
Full-text available
Background There is a growing interest in the life course approach for the prevention, early detection and subsequent management of morbidity in women of reproductive age to ensure optimal health and nutrition when they enter pregnancy. Reliable estimates of such morbidities are lacking. We report the prevalence of health or nutrition-related morbi...
Article
Full-text available
Objectives Public health and clinical recommendations should be based on results from multiple studies, however trials often have outcomes that are not defined in the same way. This project aims to harmonize selected protocols, outcome definitions, and data analysis across five randomized trials of antenatal balanced energy-protein supplementation...
Article
Full-text available
Background: Vitamin D is important for brain function and linear growth. Vitamin D deficiency during pregnancy has been linked with impaired neurodevelopment during early childhood. However, there is limited evidence from population-based studies on the long-term impact of vitamin D deficiency on cognitive development and linear growth. The object...
Article
Full-text available
Background: The period from conception to two years of life denotes a critical window of opportunity for promoting optimal growth and development of children. Poor nutrition and health in women of reproductive age and during pregnancy can negatively impact birth outcomes and subsequent infant survival, health and growth. Studies to improve birth o...
Article
Full-text available
Prenatal micronutrient deficiencies are associated with negative maternal and birth outcomes. Multiple micronutrient supplementation (MMS) during pregnancy is a cost‐effective intervention to reduce these adverse outcomes. However, important knowledge gaps remain in the implementation of MMS interventions. The Child Health and Nutrition Research In...
Article
Burden and risk factors for wasting in the first 6 months of life among Indian children are not well documented. We used data from India's National Family Health Survey 4, to estimate the prevalence of wasting (weight for length, WLZ <‐3 SD) among 18898 infants under 6 months of age. We also examined the association of wasting with household, mater...
Article
Objectives: The extent to which vitamin-D deficiency (< 10 ng/ml) is associated with neurodevelopment and linear growth in middle childhood. Methods: The study is a follow-up of a factorial randomized double-blind placebo-controlled trial in 1000 North Indian children 6 to 30 months at enrolment, receiving daily 2 RDAs of vitamin B12 and/or foli...
Article
Objective Delayed vaccination increases the susceptibility window for vaccine preventable diseases. Our analysis estimates the proportion of children between 10 and 23 months of age with delayed vaccination in India and the associated socio-demographic, maternal and child related factors. Methods We used individual level data from the National F...
Article
Full-text available
Background South Asia contributes substantially to global low birth weight population (i.e. those with birth weight < 2500 g). Synthesized evidence is lacking on magnitude of cognitive and motor deficits in low birth weight (LBW) children compared to those with normal birth weight (NBW) (i.e. birth weight ≥ 2500 g). The meta-analysis aimed to gener...
Article
Full-text available
Aim To conduct implementation research in integrated community case management (ICCM) of childhood pneumonia, diarrhoea and fever by promoting accredited social health activists as treatment providers and generate lessons for upscaling this approach. Methods In this one‐sample study, 49 Accredited Social Health Activists were trained in ICCM. Comm...
Poster
Full-text available
Intravascular blood flow displays temporal synchrony when basal ganglia neurotransmitter release is videotracked online in the normal state, while vasculature and cerebral release reflect temporal asynchrony during online videotracking of stroke: Sensing with Dual Laser Doppler Flowmetry and BRODERICK PROBE®
Article
Background: Preterm very low birth weight (VLBW) infants are at risk of gut dysbiosis and neurodevelopmental deficits. Prebiotics and probiotics may modulate gut microbiota and influence brain functions. This review synthesizes literature on effect of prebiotic and/or probiotic supplementation in preterm VLBW on their neurodevelopmental outcomes....
Article
Objectives: The aim of this study was to examine the association between vitamin D deficiency and anemia status among young children in the resource-poor setting of northern urban India. Methods: We used data from a randomized controlled trial of daily supplementation with folic acid, vitamin B12, or both for 6 mo in children 6 to 30 mo of age c...
Article
Full-text available
Objective In this secondary analysis of data from an intervention trial, we assessed the performance of Mid Upper Arm Circumference (MUAC) as a predictor of mortality in children aged 6–59 months from Delhi, India, one year after their initial MUAC measurements were taken. Additionally, we assessed MUAC as an absolute value and MUAC z-scores as pre...
Data
Diagnostic probability of mortality by MUAC z-scores and MUAC categories in children aged 6–23 months.pdf. (PDF)
Data
Diagnostic probability of mortality by MUAC z-scores and MUAC categories in children aged 24–59 months.pdf. (PDF)
Article
Full-text available
Abstract A lawful disposal of human dead body is only possible after establishment of proper and valid cause of death. If the cause is obscure, autopsy is the only mean of search. Inadequacy and unavailability of health care facility often makes this situation more complicated in developing countries where many deaths remain unexplained and proper...
Article
Full-text available
Background Low birth weight (LBW) infants constitute a vulnerable subset of infants with impaired immunity in early life. In India, there is scarcity of studies that focus on immunization practices in such infants. This analysis aimed to examine immunization practices in LBW infants with the intention to identify areas requiring intervention. Meth...
Article
Full-text available
Background: The audio signal in the conventionally accepted protocol of shuttle walk test (SWT) is not well-understood by the patients and modification of the audio signal may improve the performance of the test. Objectives: The aim of this study is to study the validity and reliability of an audio signal modified SWT, called the Singla-Richa mo...
Article
Full-text available
Background Vitamin-D deficiency has been linked with impaired development in animal studies; however, the evidence from human studies is scanty. Evidence as to whether vitamin-D deficiency during early childhood affects growth is also limited and conflicting. We examined the extent to which vitamin-D deficiency (<10 ng/ml) is associated with neurod...