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Androgenetic alopecia is a common type of hair loss in men and women, caused by a testosterone byproduct affecting hair follicles, with sensitivity determined by genetics.

Key enzymes control androgen levels, affecting hormone activity and potential treatments.

Skin issues like hirsutism, acne, and acanthosis nigricans are common in PCOS and linked to hormone and metabolic changes.

Hormones and neuropeptides affect hair growth, with androgens having opposite effects on beard and scalp hair.

The document concludes that PCOS is a complex disorder caused by both genetic and environmental factors, affecting women's health in various ways, and requires personalized treatment.

PCOS may start before birth, involves metabolic issues, and can be treated with drugs like metformin and lifestyle changes.

A certain mutation in the fetal alpha 5-reductase gene is linked to a higher risk of late miscarriage.

Finasteride may decrease semen quality but not harm sperm production, and stopping the drug can improve semen quality; hyperprolactinemia can cause infertility but is treatable with medication.

Idiopathic hirsutism may be linked to increased skin enzyme activity, and new treatments like laser and eflornithine cream show promise.

The reconstructed skin model from hair follicles functions like human skin in processing chemicals and can be used to test ingredient safety.

Female pattern hair loss severity is linked to physical signs of high androgens, not blood hormone levels.

5α-reductase enzyme affects hormone levels, influencing conditions like acne and hair loss.

Zinc and copper levels may affect erectile dysfunction by influencing hormone levels.

Females generally have stronger immune responses than males due to the X chromosome.

Androgens affect the function and health of the endometrium.

A stronger dual 5α-reductase inhibitor could improve treatment for benign prostatic hyperplasia by further reducing DHT levels.

Manipulating 5α-reductase type 2 can affect liver fat production and glucocorticoid effects.

Progesterone treatment improved seizures in a woman with menstrual cycle-related epilepsy, but a wrong medication worsened her condition.

Docosahexaenoic acid (DHA) may help hair growth by promoting dermal papilla cell proliferation.

Sex hormones affect hair growth and loss, and treatments for related hair diseases include various medications, hair transplantation, and light therapy.

Progesterone helps adult male mice grow more neurons and improves memory.

Men face more severe COVID-19 outcomes, while women are more likely to have long-term symptoms.

Hormones can change ptarmigan feather color from white to pigmented.

Adenosine and caffeine can promote hair growth.

Crinum asiaticum extract and norgalanthamine may promote hair growth by blocking an enzyme linked to hair loss and a pathway that stops hair growth.

Higher DHEA-S levels in hirsute females affect hair growth phases.

Testosterone therapy may improve mood, well-being, and sexual function in premenopausal women, but more research is needed on its long-term safety and effectiveness.

High levels of testosterone and 5α-DHT can lead to cell death in cells important for hair growth.

Using finasteride with TIP extends time off period for prostate cancer patients.

Low dose finasteride decreases certain steroids, possibly increasing depression risk.