Heterogeneous contributions of change in population distribution of body mass index to change in obesity and underweight

From 1985 to 2016, the prevalence of underweight decreased, and that of obesity and severe obesity increased, in most regions, with significant variation in the magnitude of these changes across regions. We investigated how much change in mean body mass index (BMI) explains changes in the prevalence of underweight, obesity, and severe obesity in different regions using data from 2896 population-based studies with 187 million participants. Changes in the prevalence of underweight and total obesity, and to a lesser extent severe obesity, are largely driven by shifts in the distribution of BMI, with smaller contributions from changes in the shape of the distribution. In East and Southeast Asia…

Author response: Heterogeneous contributions of change in population distribution of body mass index to change in obesity and underweight

Ecologie de la santé

Quand l'écologie pose son diagnostic. L'actualité nous le rappelle sans cesse : les maladies comme le paludisme, le Sida, ébola ou zika sont difficiles à combattre, et les maladies chroniques de type cancer, diabète ou maladies cardio-vasculaires toujours plus meurtrières. Pour la première fois de son histoire, l'humanité voit même son espérance de vie diminuer. Pour comprendre les raisons de cette crise sanitaire, l'écologie scientifique pose un autre regard sur la santé qui prend en considération les transformations de l'environnement et l'évolution de nos modes de vie. Cette nouvelle approche évolutive et écologique des problèmes de santé tente d'élucider les mécanismes en jeu dans la tr…

Height and body-mass index trajectories of school-aged children and adolescents from 1985 to 2019 in 200 countries and territories: a pooled analysis of 2181 population-based studies with 65 million participants

BACKGROUND: Comparable global data on health and nutrition of school-aged children and adolescents are scarce. We aimed to estimate age trajectories and time trends in mean height and mean body-mass index (BMI), which measures weight gain beyond what is expected from height gain, for school-aged children and adolescents.