Berthold Koletzko
Biographic Data
| ID | 4303518 |
|---|---|
| NAME | Berthold Koletzko |
| GIVEN NAMES | Berthold |
| FAMILY NAME | Koletzko |
| SIGNATURE | KOLETZKO B |
| AFFILIATIONS | Ludwig-Maximilians-Universität München |
| ORCID | 0000-0002-5345-7165 |
| VERIFIED | Yes |
| TOTAL WORKS | 37 |
| TOTAL CITATIONS | 2 |
| AUTHOR COUNT | 37 |
| EDITOR COUNT | 0 |
| FIRST PUBLICATION YEAR | 1999 |
| LATEST PUBLICATION YEAR | 2025 |
| H-INDEX | 1 |
Impact of cut-point methods on classification of physical activity and sedentary behaviour of toddlers
ClinicalTrials.gov, TRN: NCT02907502, Registration Date: 31 August 2016
ImpEnsa eHealthy Conversation Skills training for healthcare professionals aimed at improving micronutrient status during the first 1000 days in South Africa
Individuals’ lifestyle behaviours determine health. Improving Early Nutrition and Health in South Africa (“ImpENSA”), an EU Erasmus+ co-funded project, aims to tackle the triple burden of malnutrition in South Africa through equipping healthcare professionals (HCPs) with knowledge and skills to effectively support healthy nutritional choices among pregnant women and mothers/infant caregivers. Healthy Conversation Skills (HCS) is a behaviour chang…
Evaluation of ImpEnsa technology‐enabled behaviour change module delivered to healthcare professionals in South Africa to improve micronutrient nutrition during the first 1000 days
Healthcare professionals (HCPs) have vital roles in providing evidence-based care to promote healthy micronutrient nutrition in early life. Providing such care requires scalable training to strengthen knowledge and confident application of effective behaviour change skills. Among 33 public and private HCPs (primarily dietitians) in South Africa, we evaluated the behaviour change aspects of a technology-enabled National Qualification Sub-Framework…
Social inequalities in child mental health trajectories: A longitudinal study using birth cohort data 12 countries
Social inequalities in internalising and externalising problems were evident across a range of EU countries, with inequalities emerging early and generally persisting throughout childhood
Longitudinal changes in preschoolers’ adiposity indicators according to compliance with 24-hour movement behavior guidelines: Results from the ToyBox-study
The change in BMI z-scores after one year is less optimal for preschoolers who do not comply with the 24-hour movement behavior guidelines compared to preschoolers who comply with the integrated guidelines, although not clinically relevant. Future studies should incorporate longer follow-up periods to observe the effects of compliance to the integrated guidelines on adiposity indicators in preschool children
Parental Perception of Body Weight Status of Their 8-year-old Children: Findings from the European CHOP Study
The study showed no overall differences between mothers and fathers in rating their child's weight status but both parents had a propensity to underestimate their child's actual weight, particularly in boys. The EU CHOP trial registered at clinicaltrials.gov as NCT00338689
Prospective BMI changes in preschool children are associated with parental characteristics and body weight perceptions: The ToyBox-study
Objective: To examine the effect of the intervention implemented in the ToyBox-study on changes observed in age- and sex-specific BMI percentile and investigate the role of perinatal factors, parental perceptions and characteristics on this change. Design: A multicomponent, kindergarten-based, family-involved intervention with a cluster-randomised design. A standardised protocol was used to measure children’s body weight and height. Information w…
Covid-19 Associated Contact Restrictions in Germany: Marked Decline in Children’s Outpatient Visits for Infectious Diseases without Increasing Visits for Mental Health Disorders
Children have a low risk for severe COVID-19 infections, but indirect consequences of the pandemic may affect their health. We evaluated nationwide data on children's outpatient visits before and during the first wave of the COVID-19 pandemic in Germany. Data from the National Association of Statutory Health Insurance Physicians for all children with statutory health insurance and at least one physician's office visit between January 2019 and Jun…
Zinc and iron adequacy and relative importance of zinc/iron storage and intakes among breastfed infants
Neonatal nutrient storage and supplies from breast milk contribute to nutrient status and growth of infants during their early life. This study investigated the adequacy of zinc and iron intakes among breastfed infants during the first 4 months and determined the relative importance of zinc/iron storage versus nutrient intakes with infant's biochemical status and growth. A longitudinal study followed lactating women and their breastfed infants fr…
Compliance with the 24-Hour Movement Behavior Guidelines and Associations with Adiposity in European Preschoolers: Results from the ToyBox-Study
In 2019, the World Health Organization (WHO) published 24 h movement behavior guidelines for preschoolers with recommendations for physical activity (PA), screen time (ST), and sleep. The present study investigated the proportion of preschoolers complying with these guidelines (on a total week, weekdays and weekend days), and the associations with adiposity. This cross-sectional study included 2468 preschoolers (mean age: 4.75 years; 41.9% boys) …
Combining Effect and Process Evaluation on European Preschool Children’s Snacking Behavior in a Kindergarten-Based, Family-Involved Cluster Randomized Controlled Trial: The ToyBox Study
This study aimed at (1) studying the effect of the standardized ToyBox intervention on European preschoolers' snacking behavior, and (2) studying whether a higher process evaluation score from teachers and parents/caregivers was associated with a more positive result for preschoolers' snack intake. A sample of 4970 preschoolers (51.4% boys, 4.74 ± 0.44 years) from six European countries provided information on snack intake with the use of a Food …
Mediators of the effectiveness of a kindergarten-based, family-involved intervention on pre -s choolers’ snacking behaviour: The ToyBox-study
Objective The present study aimed to explore the mediating role of family-related determinants on the effects of the ToyBox-intervention on pre-school children’s consumption of healthy and unhealthy snacks. Design The ToyBox-intervention was a kindergarten-based, family-involved intervention with a cluster-randomized design, aiming to promote healthy lifestyle behaviours to prevent obesity at pre-school age. Setting Kindergartens ( n 309) in six …
Interindividual variation of human milk metabolome
Daily Patterns of Preschoolers’ Objectively Measured Step Counts in Six European Countries: Cross-Sectional Results from the ToyBox-Study
This study is part of the ToyBox-study, which is conducted in six European countries (Belgium, Bulgaria, Germany, Greece, Poland and Spain), aiming to develop a cost-effective kindergarten-based, family-involved intervention to prevent overweight and obesity in four- to six-year-old preschool children. In the current study, we aimed to examine and compare preschoolers' step count patterns, across the six European countries. A sample of 3578 presc…
Energy intake and food sources of eight Latin American countries: Results from the Latin American Study of Nutrition and Health (Elans)
Objective Few previous studies in Latin America (LA) have provided data on dietary intake composition with a standardized methodology. The present study aimed to characterize energy intake (EI) and to describe the main food sources of energy in representative samples of the urban population from eight LA countries from the Latin American Study in Nutrition and Health (ELANS). Design Cross-sectional study. Usual dietary intake was assessed with tw…
Nutrition in adolescents: Physiology, metabolism, and nutritional needs
Adolescence is the period of development that begins at puberty and ends in early adulthood. Most commonly, adolescence is divided into three developmental periods: early adolescence (10–14 years of age), late adolescence (15–19 years of age), and young adulthood (20–24 years of age). Adolescence is marked by physical and sexual maturation, social and economic independence, development of identity, acquisition of skills needed to carry out adult …
BMI and recommended levels of physical activity in school children
ClinicalTrials.gov Identifier: NCT00338689 . Registered: June 19, 2006 (retrospectively registered)
The Effect of Postpartum Depression and Current Mental Health Problems of the Mother on Child Behaviour at Eight Years
Importance of mental performance in parental choice of food for children aged 4–10 years: A study in four European countries
Objective Typically, attention focuses on how nutrition affects physical health. The present study investigated the importance that parents attach to the impact of diet on mental performance when choosing food for their child. Design Questionnaire. Setting Four European countries. Subjects Parents of children aged 4–10 years ( n 1574): England ( n 397), Germany ( n 389), Hungary ( n 398) and Spain ( n 390). Results Most parents (80–85 %) consider…
Developing a cooperative multicenter study in Latin America: Lessons learned from the Latin American Study of Nutrition and Health Project
This report examines the challenges of conducting a multicenter, cross-sectional study of countries with diverse cultures, and shares the lessons learned. The Latin American Study of Nutrition and Health (ELANS) was used as a feasibility study involving the most populous cities of eight countries in Latin America (Argentina, Brazil, Chile, Colombia, Costa Rica, Ecuador, Peru, and Venezuela) in 2014–2015, about 40% of the population of the America…
Water intake and beverage consumption of pre-schoolers from six European countries and associations with socio-economic status: The ToyBox-study
Objective To study the quantity and quality of water intake from beverages among pre-schoolers and investigate associations with gender and socio-economic status (SES). Design Kindergarten-based cross-sectional survey within the large-scale European ToyBox-study. A standardized protocol was used and parents/caregivers filled in sociodemographic data and a semi-quantitative FFQ. Setting Kindergartens in six European countries (Belgium, Bulgaria, G…
Diet quality in European pre-schoolers: Evaluation based on diet quality indices and association with gender, socio-economic status and overweight, the ToyBox-study
Objective To study diet quality among pre-schoolers using the Diet Quality Index (DQI) and to investigate differences according to gender, socio-economic status (SES) and overweight/obesity status. Design Kindergarten-based cross-sectional survey within the ToyBox-study. A standardized protocol was used and parents/caregivers self-reported sociodemographic data and a semi-quantitative FFQ. A total DQI and its four subcomponents (diversity, qualit…
Association of TAS2R38 variants with sweet food intake in children aged 1–6 years
Changes in dietary intake during puberty and their determinants: Results from the Giniplus birth cohort study
Average dietary intakes changed significantly, despite fair tracking levels, suggesting the presence of trends in dietary behaviour during puberty. Family income and parental education predominantly influenced intake changes. Our results support the rationale for dietary interventions targeting children, and suggest that sex-specific subpopulations, e.g. low socio-economic status, should be considered for added impact
Latin American Study of Nutrition and Health (Elans): Rationale and study design
Clinical Trials NCT02226627
Breast feeding and obesity: Cross sectional study
Objective: To assess the impact of breast feeding on the risk of obesity and risk of being overweight in children at the time of entry to school. Design: Cross sectional survey Setting: Bavaria, southern Germany. Methods: Routine data were collected on the height and weight of 134 577 children participating in the obligatory health examination at the time of school entry in Bavaria. In a subsample of 13 345 children, early feeding, diet, and life…
Developmental origins of adult disease: Barker's or Dörner's hypothesis
Protection, promotion and support of breast-feeding in Europe: Current situation
Objective To describe the current situation regarding protection, promotion and support of breast-feeding in Europe, as a first step towards the development of a blueprint for action. Design and setting A questionnaire was completed by 29 key informants and 128 other informants in the EU, including member states, accession and candidate countries. Results EU countries do not fully comply with the policies and recommendations of the Global Strateg…
Vitamin A status among children in China
ObjectiveThe objective of this study was to assess the prevalence of vitamin A deficiency (VAD) in children under 6 years old in China and to identify risk groups for VAD.DesignA cross-sectional survey was conducted in 14 provinces from coastal, inland and western geographic areas in China.SettingOne city (urban) and two counties (rural) were randomly selected from each province as survey areas.SubjectsAbout 200 children aged 0–6 years were rando…
Vitamin A status among children in China
Objective The objective of this study was to assess the prevalence of vitamin A deficiency (VAD) in children under 6 years old in China and to identify risk groups for VAD. Design A cross-sectional survey was conducted in 14 provinces from coastal, inland and western geographic areas in China. Setting One city (urban) and two counties (rural) were randomly selected from each province as survey areas. Subjects About 200 children aged 0–6 years wer…
Complementary Feeding: A Commentary by the ESPGHAN Committee on Nutrition
Protection, promotion and support of breast-feeding in Europe: Current situation
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Relevance of European alignment for micronutrients' recommendation regarding pregnant and lactating women, infants, children and adolescents: An insight into preliminary steps of Eurreca
The European Commission (EC) recognized in 2005 the call for a Network of Excellence on ‘nutrient status and requirements of specific vulnerable population groups’, in order to harmonize micronutrient recommendations across Europe as a result of the considerable variations within the European countries (Doets et al. 2008). These large disparities in micronutrient intake recommendations are attributed to different approaches, lack of transparency …
Lifetime health outcomes of breast-feeding: A comparison of the policy documents of five European countries
Objective To (i) identify and describe prevailing infant feeding policy documents in five diverse European countries; (ii) analyse types of health outcomes for the infant that are associated with feeding breast milk rather than formula milk in the documents of different countries; and (iii) assess the extent to which documents reflect the WHO global recommendation of exclusive breast-feeding for 6 months. Design Documentary review and analysis. S…
The process of setting micronutrient recommendations: A cross-European comparison of nutrition-related scientific advisory bodies
Objective To examine the workings of the nutrition-related scientific advisory bodies in Europe, paying particular attention to the internal and external contexts within which they operate. Design Desk research based on two data collection strategies: a questionnaire completed by key informants in the field of micronutrient recommendations and a case study that focused on mandatory folic acid (FA) fortification. Setting Questionnaire-based data w…
A qualitative interview study on effects of diet on children’s mental state and performance. Evaluation of perceptions, attitudes and beliefs of parents in four European countries
Health effects of infant feeding: Information for parents in leaflets and magazines in five European countries
Parents’ decisions about whether to breastfeed their infant, and when to introduce complementary foods, are important public health issues. Breastfeeding has beneficial health effects and is widely promoted. Leaflets and magazine articles on infant feeding were collected in 2005, in five European countries (England, Finland, Germany, Hungary, Spain), and screened for statements that link feeding behaviours to infant health outcomes. A total of 12…
Changes in dietary intake during puberty and their determinants: Results from the Giniplus birth cohort study
Average dietary intakes changed significantly, despite fair tracking levels, suggesting the presence of trends in dietary behaviour during puberty. Family income and parental education predominantly influenced intake changes. Our results support the rationale for dietary interventions targeting children, and suggest that sex-specific subpopulations, e.g. low socio-economic status, should be considered for added impact
Latin American Study of Nutrition and Health (Elans): Rationale and study design
Clinical Trials NCT02226627
Water intake and beverage consumption of pre-schoolers from six European countries and associations with socio-economic status: The ToyBox-study
Objective To study the quantity and quality of water intake from beverages among pre-schoolers and investigate associations with gender and socio-economic status (SES). Design Kindergarten-based cross-sectional survey within the large-scale European ToyBox-study. A standardized protocol was used and parents/caregivers filled in sociodemographic data and a semi-quantitative FFQ. Setting Kindergartens in six European countries (Belgium, Bulgaria, G…
Diet quality in European pre-schoolers: Evaluation based on diet quality indices and association with gender, socio-economic status and overweight, the ToyBox-study
Objective To study diet quality among pre-schoolers using the Diet Quality Index (DQI) and to investigate differences according to gender, socio-economic status (SES) and overweight/obesity status. Design Kindergarten-based cross-sectional survey within the ToyBox-study. A standardized protocol was used and parents/caregivers self-reported sociodemographic data and a semi-quantitative FFQ. A total DQI and its four subcomponents (diversity, qualit…
Association of TAS2R38 variants with sweet food intake in children aged 1–6 years
Nutrition in adolescents: Physiology, metabolism, and nutritional needs
Adolescence is the period of development that begins at puberty and ends in early adulthood. Most commonly, adolescence is divided into three developmental periods: early adolescence (10–14 years of age), late adolescence (15–19 years of age), and young adulthood (20–24 years of age). Adolescence is marked by physical and sexual maturation, social and economic independence, development of identity, acquisition of skills needed to carry out adult …
BMI and recommended levels of physical activity in school children
ClinicalTrials.gov Identifier: NCT00338689 . Registered: June 19, 2006 (retrospectively registered)
The Effect of Postpartum Depression and Current Mental Health Problems of the Mother on Child Behaviour at Eight Years
Importance of mental performance in parental choice of food for children aged 4–10 years: A study in four European countries
Objective Typically, attention focuses on how nutrition affects physical health. The present study investigated the importance that parents attach to the impact of diet on mental performance when choosing food for their child. Design Questionnaire. Setting Four European countries. Subjects Parents of children aged 4–10 years ( n 1574): England ( n 397), Germany ( n 389), Hungary ( n 398) and Spain ( n 390). Results Most parents (80–85 %) consider…
Developing a cooperative multicenter study in Latin America: Lessons learned from the Latin American Study of Nutrition and Health Project
This report examines the challenges of conducting a multicenter, cross-sectional study of countries with diverse cultures, and shares the lessons learned. The Latin American Study of Nutrition and Health (ELANS) was used as a feasibility study involving the most populous cities of eight countries in Latin America (Argentina, Brazil, Chile, Colombia, Costa Rica, Ecuador, Peru, and Venezuela) in 2014–2015, about 40% of the population of the America…
Daily Patterns of Preschoolers’ Objectively Measured Step Counts in Six European Countries: Cross-Sectional Results from the ToyBox-Study
This study is part of the ToyBox-study, which is conducted in six European countries (Belgium, Bulgaria, Germany, Greece, Poland and Spain), aiming to develop a cost-effective kindergarten-based, family-involved intervention to prevent overweight and obesity in four- to six-year-old preschool children. In the current study, we aimed to examine and compare preschoolers' step count patterns, across the six European countries. A sample of 3578 presc…
Energy intake and food sources of eight Latin American countries: Results from the Latin American Study of Nutrition and Health (Elans)
Objective Few previous studies in Latin America (LA) have provided data on dietary intake composition with a standardized methodology. The present study aimed to characterize energy intake (EI) and to describe the main food sources of energy in representative samples of the urban population from eight LA countries from the Latin American Study in Nutrition and Health (ELANS). Design Cross-sectional study. Usual dietary intake was assessed with tw…
Mediators of the effectiveness of a kindergarten-based, family-involved intervention on pre -s choolers’ snacking behaviour: The ToyBox-study
Objective The present study aimed to explore the mediating role of family-related determinants on the effects of the ToyBox-intervention on pre-school children’s consumption of healthy and unhealthy snacks. Design The ToyBox-intervention was a kindergarten-based, family-involved intervention with a cluster-randomized design, aiming to promote healthy lifestyle behaviours to prevent obesity at pre-school age. Setting Kindergartens ( n 309) in six …
Medicine (33 works) · Obesity, Physical Activity, Diet (22 works) · Environmental health (17 works) · Demography (12 works) · Pediatrics (12 works) · Demography (11 works) · Psychology (11 works) · Internal Medicine (9 works) · Public health (9 works) · Body mass index (8 works)