Seasonal Variation of Estradiol, Follicle Stimulating Hormone, and Dehydroepiandrosterone Sulfate in Women and Men | Zendy

Åshild Bjørnerem | Zendy; Bjørn Straume | Zendy; Pål Øian | Zendy; Gro Berntsen | Zendy

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Seasonal Variation of Estradiol, Follicle Stimulating Hormone, and Dehydroepiandrosterone Sulfate in Women and Men

Author(s) -

Åshild Bjørnerem,

Bjørn Straume,

Pål Øian,

Gro Berntsen

Publication year - 2006

Publication title -

the journal of clinical endocrinology and metabolism

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.206

H-Index - 353

eISSN - 1945-7197

pISSN - 0021-972X

DOI - 10.1210/jc.2006-0866

Subject(s) - dehydroepiandrosterone sulfate , endocrinology , follicle stimulating hormone , medicine , hormone , population , seasonality , luteinizing hormone , testosterone (patch) , dehydroepiandrosterone , biology , androgen , ecology , environmental health

Seasonal variation in daylight regulates reproduction in animals living at higher latitude, but the influence of season on the sex hormones in humans remains unclear. OBJECTIVE, DESIGN, AND PARTICIPANTS: A cross-sectional population-based study in Tromsø, Norway (70 degrees N) included 1651 women and 1540 men aged 25-84 yr. Circulating total estradiol (and calculated free levels), FSH, and dehydroepiandrosterone sulfate (DHEAS) were measured between September 1994 and September 1995 and provided a unique opportunity to study effects of extreme seasonal variations in the daylight on hormone levels in an arctic population.

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