نتایج جستجو برای: age at menarche
تعداد نتایج: 4127068 فیلتر نتایج به سال:
Little is known about the impact of age at menarche on later mortality. In a cohort of 61,319 Norwegian women interviewed in 1956-1959, the authors analyzed associations between age at menarche and all-cause mortality. A total of 36,114 women died during the 37 years of follow-up. An inverse association was found between age at menarche and the all-cause mortality rate (p < 0.001), with an appr...
PURPOSE Studies indicate that milk intake is associated with insulin-like growth factor 1 (IGF-1) concentrations and height in childhood, whether milk and other dairy products promote puberty remains unclear. This study aimed to investigate influences of pre-pubertal intakes of milk, yogurt and cheese on menarcheal age in Tehranian girls. The associations of total dietary calcium (Ca), magnesiu...
Previous studies of predominantly Western populations have reported inconsistent associations between age at menarche and risk of diabetes. We examined this relationship among Chinese women, who generally experience menarche at a later age than Western women. In 2004-2008, China Kadoorie Biobank recruited 302,632 women aged 30-79 years from 10 areas across China, and recorded 5,391 incident cas...
BACKGROUND The acceleration of pubertal development is an important medical and social problem, as it may result in increased morbidity and mortality in later life. This systematic review summarizes relevant data about nongenetic factors, which contribute to age at menarche (AAM), and suggests those which may be the most important. METHODS The available literature from 1980 till July 2013 was...
Background Premature adrenarche (PA) has been linked to early thelarche and menarche, but longitudinal data on growth and pubertal development after PA are insufficient. Methods Growth and pubertal development of mostly full-term and appropriate for gestational age-born 43 PA (36 girls) and 63 control children (52 girls) were analyzed prospectively. Children examined first at the mean age of ...
OBJECTIVE Literature data on the effects of CYP17 MspA1 polymorphism on age at menarche (AAM) are inconsistent. To reexamine this controversy, we performed a meta-analysis. STUDY DESIGN In total 16 studies containing more than 11000 individuals of various ethnicities were selected for the analyses. For 11 case-control studies, odds ratio (OR) was employed to evaluate the risk of late AAM for ...
We sought to determine whether average age at menarche (AAM) declined in Chinese girls during the past decades, and whether there were any differences of AAM among urban and rural girls in the mainland of China. The analysis of the study was based on Han schoolgirls aged 9 to 18 years in 22-30 provinces during 6 cycles (1985, 1991, 1995, 2000, 2005 and 2010) of Chinese National Survey on Studen...
BACKGROUND Although dichlorodiphenyl trichloroethane (DDT) exposure is known to affect human endocrine function, few previous studies have investigated the effects of DDT exposure on age at menarche or menstrual cycle length. METHODS A cross sectional study was conducted to study the effects of DDT exposure on age at menarche and menstrual cycle length among 466 newly married, nulliparous fem...
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