Puberty-timing is everything!
نویسندگان
چکیده
Puberty is a dynamic period of physical growth, sexual maturation, and psychosocial achievement that generally begins between age 8 and 14 years. The age of onset varies as a function of sex, ethnicity, health status, genetics, nutrition, and activity level. Puberty is initiated by hormonal changes triggered by the hypothalamus. Children with variants of normal pubertal development--both early and late puberty--are common in pediatric practice. Recognizing when variations are normal and when referral for further evaluation is indicated is an important skill.
منابع مشابه
What controls the timing of puberty? An update on progress from genetic investigation.
PURPOSE OF REVIEW Puberty is an important developmental stage during which reproductive capacity is attained. Genetic and environmental factors both influence the timing of puberty, which varies greatly among individuals. However, although genetic variation is known to influence the normal spectrum of pubertal timing, the specific genes involved remain unknown. RECENT FINDINGS Recent genetic ...
متن کاملRole of environmental factors in the timing of puberty.
Puberty-timing measures have historically been used as indicators of adequate nutrition and growth. More recently, these measures have been examined in relation to exposure to estrogenic or antiandrogenic agents, as well as other environmental factors. The scientific community has debated whether puberty timing is occurring earlier today than in the mid-1900s in the United States and, if so, wh...
متن کاملTiming of puberty and synchronization of seasonal rhythms by simulated natural photoperiods in female Siberian hamsters.
The timing of puberty is a critical life history trait of short-lived species; spring-born individuals mature rapidly and breed in the season of birth, whereas young born in mid- to late summer delay puberty until the next spring. The cues that govern the transition from rapid to delayed maturation in natural populations remain unknown. To identify ecologically relevant photoperiod cues that co...
متن کاملShared genetic aetiology of puberty timing between sexes and with health-related outcomes
Understanding of the genetic regulation of puberty timing has come largely from studies of rare disorders and population-based studies in women. Here, we report the largest genomic analysis for puberty timing in 55,871 men, based on recalled age at voice breaking. Analysis across all genomic variants reveals strong genetic correlation (0.74, P=2.7 × 10(-70)) between male and female puberty timi...
متن کاملThe relationship between obesity and body compositions with respect to the timing of puberty in Chongqing adolescents: a cross-sectional study
BACKGROUND It is well known that excess adiposity during childhood may influence pubertal development. However, the extent to which body compositions vary in throughout puberty in boys and girls is currently unknown. The aim of this study was to investigate whether obesity and body compositions correlate with the timing of puberty in boys and girls. METHODS By random cluster sampling, our stu...
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ورودعنوان ژورنال:
- Journal of pediatric nursing
دوره 20 2 شماره
صفحات -
تاریخ انتشار 2005