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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.

Bisphenol-A (BPA) increases connections between brain cells and boosts their activity, but it blocks the effects of a male hormone on brain cell plasticity.

Androgen receptors are active in many tissues of both male and female mice, not just reproductive organs.

Hormonal male contraception is effective and could be market-ready, but more research is needed to ensure safety for all ethnic groups.

Neurosteroids help regulate oxytocin levels, especially during stress and pregnancy, to protect against premature labor.

A man with testotoxicosis was fertile despite low FSH levels, suggesting high testosterone may allow sperm production without FSH.

High levels of testosterone and anti-Müllerian hormone before pregnancy are linked to a higher risk of newborns needing intensive care.

Male C57BL/6 mice show age-related fluctuations in certain hormones and their ratios in both blood and hair.

Thyroid and gonadal hormones control seasonal hair growth and molting in male European badgers.

Female mice with disrupted 5α-reductase 1 had significant metabolic issues, including stress response problems, insulin resistance, liver fat buildup, and obesity.

Low birthweight and rapid weight gain after birth may increase the risk of developing polycystic ovary syndrome.

The combination of cyproterone acetate and testosterone enanthate is highly effective in preventing sperm production and could be a good reversible male contraceptive.

Removing both ovaries treated the woman's excess male hormone symptoms.

Ovarian hyperthecosis should be considered in young women with severe male-like symptoms and can be managed with hormone treatments.

The dog had a Sertoli cell tumor, which was successfully removed with surgery.

Stem cell niches are crucial for regulating stem cell renewal and differentiation, and understanding them can help in developing regenerative therapies.

Finasteride doesn't affect hormone levels in normal men.

Testosterone and finasteride raise insulin and zinc, lower chromium in male rats.

Ovulation disorders are a major cause of infertility and menstrual problems in women.

High levels of cortisol in hair show long-term stress which can lower fertility in animals.

The report concludes that PCOS is mainly a condition of excess male hormones and its definition may change as new information is discovered.

The hypothesis suggests that PCOS may start early in life due to genetic and environmental factors, influencing future reproductive and metabolic problems.

Chemicals and body size might change when puberty starts and progresses, but more research is needed to confirm this.

Postpartum depression is linked to changes in brain chemicals, inflammation, stress, and certain genes, and can potentially be identified by markers like specific steroids, serotonin levels, and vitamin D levels.

Animals that change color with the seasons mainly do so in response to daylight changes, but climate change is causing camouflage problems that may require evolutionary changes.

Mouflon rams mature gradually with changes in body, horns, and hormones linked to age and seasons, reaching full sexual maturity well after puberty.

Alopecia in captive rhesus macaques is affected by season, sex, age, housing, and stress, with complex links between stress hormones and hair loss.

Shift nurses show altered body temperature and stress hormone levels, suggesting their body clocks adjust to irregular schedules.

Women with PCOS have similar levels of certain proteins compared to women without PCOS, and these proteins don't independently cause PCOS.

Continuous light exposure in rats leads to PCOS-like symptoms and suggests sleep habits might affect the disorder's development.