Objective criteria are needed for defining, in various animal species, changes occurring at puberty. Particularly required are estimates of the relationship of alterations in the growth of the whole body to the sex organs and the secondary sexual characteristics. A procedure that has been widely employed has been to plot testicular weight as a function of time and to observe inflection points.'...

Mothers and fathers influence the risk of obesity in their children through genetic, environmental, and behavioral factors. Unique to the mother, however, is the intrauterine environment in which the fetus develops, and it is during this time in the uterus that the risk of later obesity in the child may develop. In this issue of the Journal, Fleten et al. (Am J Epidemiol. 2012;176(2):83-92) inv...

BACKGROUND The coexistence of underweight and overweight (double burden) remains a major problem in many developing countries. Little is known about the factors associated with the double burden of malnutrition in Palestinian children. OBJECTIVE To assess factors associated with undernutrition and overnutrition in 1500 schoolchildren aged 5 to 16 years, in the West Bank. METHODS We surveyed...

In recent decades, China has been in a rapid social and health transition. As seen in many developing countries, it is currently facing a double burden of both underand overnutrition. The national average daily intake of energy, per reference person, was reduced from 2,328 kcal in 1992 to 2,252 kcal in 2002, but that of fat increased from 58.3 to 76.2 g. The national prevalence of growth retard...