30 citations
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July 2004 in “Fertility and Sterility” Amenorrhea is when a woman doesn't have periods, with primary amenorrhea starting by age 15 or within five years of breast development, and secondary amenorrhea when periods stop for three months. It affects 3-4% of women not pregnant, breastfeeding, or in menopause, mainly due to polycystic ovary syndrome, hypothalamic amenorrhea, hyperprolactinemia, and ovarian failure.
3 citations
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January 2012 in “Internal Medicine” A Rathke's cleft cyst caused hormonal imbalances and symptoms in a 68-year-old woman.
430 citations
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July 2002 in “Journal of Endocrinology” The hypothesis suggests that PCOS may start early in life due to genetic and environmental factors, influencing future reproductive and metabolic problems.
197 citations
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January 2019 in “Neuropsychopharmacology” Male and female bodies respond differently to stress, influenced by hormones and development stages, with implications for stress-related diseases.
70 citations
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March 2016 in “Urologic Clinics of North America” The document explains how the male reproductive system works, its role in making testosterone, and how conditions like obesity can disrupt it, leading to low testosterone and fertility issues.