Adiposity rebound (AR) refers to the second rise of the body mass index (BMI) curve that usually occurs between six and eight years of age. AR timing has a significant impact on patients' health: early AR (EAR), usually before the age of five, is considered to be the earliest indicator of obesity and its related health conditions later in life. Many studies have evaluated factors that can be predictors of EAR, and identified low birth weight and gestational weight gain as novel predictors of EAR, highlighting the role of the intrauterine environment in the kinetics of adiposity. Furthermore, children with breastfeeding longer than 4 months have been found to be less likely to have an EAR, whereas children born to advanced-age mothers, high maternal BMI had a higher risk of having an EAR. Some differences were found in the timing of AR in boys and girls, with girls being more likely to have EAR. The aim of this review is to answer the following three questions: 1) Which are the prenatal and perinatal factors associated with increased risk of EAR? Is gender one of these? 2) Which are the outcomes of EAR in childhood and in adulthood? 3) Which measures can be taken in order to prevent premature AR?
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http://dx.doi.org/10.1186/s13052-024-01671-4 | DOI Listing |
Obesity (Silver Spring)
January 2025
Department of Nutrition, Exercise and Sports, Faculty of Science, University of Copenhagen, Copenhagen, Denmark.
Objective: The study objective was to evaluate changes in abdominal adipose tissue and ectopic fat during pregnancy and their associations with gestational weight gain (GWG) in women with overweight/obesity.
Methods: This study was a secondary analysis of a randomized controlled trial. Magnetic resonance scans were performed during gestational week (GW) 15, GW 32, and around birth to measure abdominal subcutaneous (SAT) and visceral (VAT) adipose tissues, liver fat, and muscle fat.
Nat Commun
November 2024
Institute for Molecular Bioscience, University of Queensland, Brisbane, Australia.
Genetic effects on changes in human traits over time are understudied and may have important pathophysiological impact. We propose a framework that enables data quality control, implements mixed models to evaluate trajectories of change in traits, and estimates phenotypes to identify age-varying genetic effects in GWAS. Using childhood BMI as an example trait, we included 71,336 participants from six cohorts and estimated the slope and area under the BMI curve within four time periods (infancy, early childhood, late childhood and adolescence) for each participant, in addition to the age and BMI at the adiposity peak and the adiposity rebound.
View Article and Find Full Text PDFNature
December 2024
Laboratory of Nutrition and Metabolic Epigenetics, Institute of Food, Nutrition and Health, Department of Health Sciences and Technology, ETH Zurich, Zurich, Switzerland.
Med
November 2024
Copenhagen Prospective Studies on Asthma in Childhood (COPSAC), Herlev and Gentofte Hospital, University of Copenhagen, Copenhagen, Denmark; Department of Food Science, University of Copenhagen, 1958 Frederiksberg C, Denmark. Electronic address:
Background: The gut microbiota has been implicated in adult obesity, but the causality is still unclear. It has been hypothesized that an obesity-prone gut microbiota can be established in infancy, but only few studies have examined the early-life gut microbiota in relation to obesity in childhood, and no consistent associations have been reported. Here, we examine the association between the early-life gut microbiota and body mass index (BMI) development and body composition throughout childhood.
View Article and Find Full Text PDFJ Physiol
December 2024
School of Kinesiology, University of British Columbia, Vancouver, BC, Canada.
Growth differentiation factor 15 (GDF15) is a stress-induced cytokine that suppresses food intake and causes weight loss. GDF15 also reduces voluntary physical activity and, thus, it is not clear whether combining GDF15 with exercise will be beneficial or if reductions in food intake would be offset by decreases in physical activity. We investigated how GDF15 treatment combined with voluntary wheel running (VWR) would impact weight gain, food intake, adiposity and indices of metabolic health in mice.
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