April 2023 in “Tropical Animal Health and Production” Giving melatonin to sheep before the non-breeding season can improve their chances of reproducing in northwest Mexico.
21 citations
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December 2019 in “PloS one” The rat model showed early perimenopause with regular cycles and low hormones, and late perimenopause with irregular cycles and higher hormone levels.
17 citations
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August 1971 in “Journal of Investigative Dermatology”
2 citations
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April 2021 in “Reproductive health of woman” Most women with polycystic ovary syndrome (PCOS) have menstrual issues, infertility, acne, and excessive body hair, with the most common type being the non-androgenic phenotype.
1 citations
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December 1971 in “PubMed” February 2015 in “Oxford University Press eBooks”
145 citations
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March 2010 in “Fertility and Sterility” Different types of polycystic ovary syndrome (PCOS) have varying severity, with Type I being the most severe and common.
2 citations
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May 2006 in “Women's Health Medicine” Ovulation disorders are a major cause of infertility and menstrual problems in women.
19 citations
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October 2018 in “Medicine” Oriental herbal medicine with moxibustion may improve pregnancy rates and other symptoms in PCOS, but more high-quality research is needed.
January 2025 in “Haematology International Journal” These ovarian conditions cause high testosterone levels.
4 citations
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December 2017 in “Journal of zoo and wildlife medicine” Hormonal changes during the reproductive cycle may cause seasonal skin problems in captive female fossas.
6 citations
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October 2018 in “Endocrinology” Prenatally androgenized ewes can model increased hair diameter in women with PCOS.
January 2023 in “International journal of medical science and health research” Anovulatory PCOS patients are younger with longer cycles and higher blood pressure and hormone levels.
January 2016 in “Journal of SAFOG” Girls with PCOS and menstrual disorders have notably higher androgen hormone levels.
42 citations
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September 2007 in “The Journal of Clinical Endocrinology and Metabolism” The research found that polycystic ovary syndrome (PCOS) has two distinct types, with one having more severe hormone and insulin issues.
2 citations
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November 2025 in “Journal of Ovarian Research” Reducing granulosa cell pyroptosis may improve oocyte maturation in PCOS.
27 citations
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April 2017 in “European journal of endocrinology” The research found that MRI and certain hormone levels can help tell apart ovarian tumors from hyperthecosis in postmenopausal women, but tissue analysis is still needed for a definite diagnosis.
October 2025 in “Journal of Obstetric and Gynaecological Practices POGS” 9 citations
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April 2018 in “Biology of reproduction” Diet changes hormone levels in pregnant ewes by affecting metabolism, not placental synthesis.
December 2022 in “Journal of Pharmaceutical Negative Results” Late onset of first period and irregular development of sexual traits in teenage girls can lead to poorer reproductive health.
30 citations
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January 2015 in “BioMed Research International” Continuous light exposure in rats leads to PCOS-like symptoms and suggests sleep habits might affect the disorder's development.
1 citations
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February 2024 in “Gynecological Endocrinology” Medroxyprogesterone acetate is as effective as oral contraceptives for resuming ovulation in women with PCOS.
Male goat smell increases reaction in young female goats' noses but doesn't cause them to start puberty early.
January 2011 in “Yearbook of Endocrinology” 1 citations
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July 2025 in “Journal of Chemical Biological and Physical Sciences” Women with PCOS have shorter reproductive periods and higher infertility rates compared to healthy women.
2 citations
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February 2022 in “Frontiers in Endocrinology” Antiandrogenic pretreatment for women with PCOS does not improve fertility outcomes and delays pregnancy.
2 citations
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December 1994 in “The Journal of clinical endocrinology and metabolism/Journal of clinical endocrinology & metabolism” The treatment effectively reduced hair growth and was safe for patients with PCOS, but it needs better bleeding control.
4 citations
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December 2021 in “Clinical and Experimental Reproductive Medicine” Higher estrone-to-estradiol ratios are linked to worse glucose metabolism and insulin resistance in women with PCOS.
November 2025 in “Journal of Investigative Dermatology” Estetrol may help prevent hair loss and support hair growth in women.
62 citations
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August 2018 in “Frontiers in Endocrinology” Androgens are important for normal ovarian function and estrogen production, but may not be the main cause of follicle death.