To the Editor.
Obesity is recognized to be the result of a positive energy balance, mainly attributable to excessive energy intake accounted for by a high contribution of dietary fat. This was our original hypothesis when we started a longitudinal study conducted in French children followed from infancy to age 8 years.1 The aim of the study was to identify the causes of the early adiposity rebound recorded in most obese children. The adiposity rebound is the point at which the body mass index (BMI) increases after its nadir that takes place around the age of 6 years. An early adiposity rebound was found to be associated with higher BMI at adolescence and adulthood.2–4 Recently, in a longitudinal study of children followed from birth to 5 years in the United Kingdom, Dorosty et al5 also investigated the factors associated with an early adiposity rebound.
First, neither of...