timing of puberty
Role of Environmental Factors in the Timing of Puberty
... whether puberty timing is occurring earlier today than in the mid-1900s in the United States and, if so, whether envi- ronmental factors play a role; however, no one has asked a multidisciplinary panel to ...
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Link Between Body Fat and the Timing of Puberty
... thickness of premenarcheal and postmenarcheal girls of the same age and found extensive overlap; he concluded that there was no clear evidence of a threshold level of weight or fatness that is critical for the onset of ...
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<p>Could long-term administration of melatonin to prepubertal children affect timing of puberty? A clinician’s perspective</p>
... pubertal timing in children, but we reviewed the small number of observational ...of puberty as there are similarities between the ...pubertal timing, it will be important to conduct long-term ...
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Preterm birth and the timing of puberty: a systematic review
... [18]. This hypothesis is supported by early data which showed that preterm birth was associated with earlier (6 months) onset of menarche, as compared to term controls [19]. To examine the hypothesis that preterm birth ...
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Timing of Puberty in Overweight Versus Obese Boys
... Briefly, 212 trained clinicians from the PROS and Academic Pediatric Association’s Continuity Research Network (CORNET) recruited patients between July 2005 and February 2010. Boys ages 6 to 16 years being seen for ...
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Examination of US Puberty-Timing Data from 1940 to 1994 for Secular Trends: Panel Findings
... through puberty earlier today than in the mid-1900s has been ...the timing of puberty markers in US boys or ...girls’ puberty timing for any marker are ...male puberty markers, ...
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Puberty in female wild boar (Sus scrofa) in Sweden
... of puberty in free-rang- ing female wild boar gilts are based on post-mortem mac- roscopic examinations of the reproductive ...of puberty in these studies varies, which make comparisons ...reached ...
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RASopathies Are Associated With Delayed Puberty; Are They Associated With Precocious Puberty Too?
... Future comprehensive studies of pubertal development in patients with RASopathies are needed to investigate these important genotype–phenotype correlations. Such studies would provide insight into the pathways that ...
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The effects of pubertal timing and dominance on the mating strategy, appearance and behaviour of men
... precocious puberty (with pubertal development occurring around 2-4 years) in the males of one family, linked to a specific genetic mutation in their luteinising hormone (LH) receptors, which presumably promotes ...
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... been linked to elevated IGF-1 concentrations and insulin resistance, elevated adrenal andro- gen concentrations, exaggerated adrenarche, obesity, and consequently elevated concentra- tions of hormones such as leptin. It ...
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Divergent roles of growth factors in the GnRH regulation of puberty in mice
... affect puberty in control or GnRH-IGFRKO animals (Figure ...on puberty is striking, although not ...the timing of puberty in mammals is earlier in females than males, implying that activation ...
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Maternal pre-pregnancy body mass index, smoking in pregnancy, and alcohol intake in pregnancy in relation to pubertal timing in the children
... of puberty has been reported in girls, whereas the trend to- ward earlier age at menarche has leveled off in some coun- tries since the 1960s [1, ...in timing of puberty over time is of concern be- ...
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Public Health Implications of Altered Puberty Timing
... precocious puberty in girls: the suggested age limits are 6 years in black American girls, 7 years in white American girls, and 8 years in European ...early puberty in both boys and girls at the individual ...
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Environmental Factors and Puberty Timing: Expert Panel Research Needs
... A summary of selected examples of single environmen- tal chemicals whose exposure at specific dosages may lead to puberty-timing alterations is presented in Table 1. This table is organized by mode of ...
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Gender nonconforming youth: current perspectives
... physical puberty for that child to best make a determination of the gender that feels most authentic to him/her; 2) given devel- opmental stages of childhood, facilitating a social transition from one gender to ...
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PRECOCIOUS PUBERTY
... entiation.” Normal and abnormal sexual development has been reviewed by Wilkins.3 A fairly large number of patients with hypophyseal precocity resulting from hypo-.. thalamic lesions has[r] ...
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International Adoption, “Early” Puberty, and Underrecorded Age
... early puberty is genuine, researchers have hypothesized that it is caused by nutritional deprivation before adop- tion followed by catch-up after adop- ...early puberty is caused by endocrine disrupters and ...
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An empirical study on impact of puberty among children in young age with special reference to Tiruppur
... Dermatological problems of adolescence are mainly related to fluctuations in hormone levels mainly androgens. They include acne, hair problems and excessive sweating. The paper will teach about girl children’s proper ...
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Growth and Normal Puberty
... measurements were obtained annually in children 6 to 17 years of age. A substantial number of children were enrolled in this study from six cities in the states of Kansas, Massachusetts, Minnesota, Missouri, Ohio, and ...
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Anorexia nervosa in males: similarities and differences to anorexia nervosa in females
... of puberty has only about 12% of his body as fat, has less distance to travel in this respect than the female (whose body fat comprises about 25% of her body weight by this ...
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