Importance There has been a worldwide secular trend toward earlier onset of puberty in the
general population. However, it remains uncertain if these changes are paralleled with …

Despite the warmth in the room as they shook the snow off their winter coats and gathered
around the kitchen table, there was a collective sense of nervousness and, in some cases …

This review presents a comprehensive discussion of the clinical condition of delayed
puberty, a common presentation to the pediatric endocrinologist, which may present both …

The prevalence of child and adolescent obesity in the United States increased dramatically
between 1970 and 2000, and there are few indications that the rates of childhood obesity …

This paper presents a new perspective on the transition from early to middle childhood (ie,
human juvenility), investigated in an integrative evolutionary framework. Juvenility is a …

A recent decline in onset of puberty–especially among girls–has been observed, first in the
US in the mid‐1990s and now also in Europe. The development of breast tissue in girls …

Menstrual problems and health-seeking behaviour in Hong Kong Chinese girls Page 1 18 Hong
Kong Med J Vol 15 No 1 # February 2009 # www.hkmj.org Introduction Menarche is a normal …

Decades of puberty research have yielded key scientific discoveries. Building on the field's
rich history, we highlight four understudied populations: youth of color, boys, sexual minority …

Individuals differ in their timing of sleep (eg, bedtimes, rise times) and in their preference for
morning or evening hours. Chronotype refers to these differences in morningness …

Context: Estrogens and androgens play key roles for pubertal onset and sexual maturation.
Most currently used immunoassays are not sensitive enough to accurately measure the low …