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Certain sex hormones and antiandrogens can either slow down or speed up the growth of human hair follicle cells depending on their concentration.

Polycystic Ovary Syndrome (PCOS) is a hormonal disorder in women that can cause infertility and other health issues, and it may be improved by treatments that increase insulin sensitivity.

Early medical support for transgender youth is important for their health, with low regret for gender-affirming hormone use and a need for knowledgeable care providers.

Humans can accurately guess age from faces, with women being slightly better at it, and age perception is linked to evolutionary factors.

Sex hormones affect brain cells differently in males and females.

Conditions affecting sex development show that sexual diversity is a natural part of human variation.

Male hormones worsen kidney transplant damage, but blocking them helps.

Feminizing hormone therapy increases kidney filtration rate.

Hormones significantly influence hair growth, with conditions like hirsutism and patterned hair loss linked to hormone levels; more research is needed for full understanding.

Male hormones control a specific gene in hamster skin, with different hormones having varying effects.

Sex hormones, especially estradiol, can change chicken feather shapes and colors.

5α-reductase inhibitors may worsen sexual drive and spontaneous erections but don't worsen existing erectile or ejaculatory problems.

Women generally handle heart enlargement better than men, but it's riskier for them if it occurs; hormones like estrogen offer some protection.

Insulin resistance and high male hormone levels are major causes of Polycystic Ovary Syndrome.

Male hormones and their receptors play a key role in hair loss and skin health, with potential new treatments being explored.

Metformin taken during pregnancy increases SHBG in newborns but doesn't change other hormone levels in mothers or babies.

PCOS symptoms change with age; younger women have higher androgen levels and less metabolic issues, while older women face more metabolic challenges despite milder PCOS symptoms.

Genetics and hormones cause hair loss; finasteride treats it safely.

Male pattern hair loss is diagnosed and treated earlier and is milder, possibly due to early puberty.

Pattern baldness is likely caused by a dominant gene influenced by testosterone levels, making it more common in men.

Older men with lower levels of available testosterone are more likely to be frail.

Sex hormones affect hair and feather growth and may help manage alopecia and hormone-dependent cancers.

Melasma's causes include genetics, sun exposure, hormones, and oxidative stress, and understanding these can help create better treatments.

No significant link was found between the studied genes and female hair loss in the Polish population.

Hormone therapy for trans individuals is effective and generally safe in the short term.

Higher SHBG levels are linked to less severe hair loss in women, but vitamin D levels don't seem to affect hair loss.

Male cancer patients have a higher risk of severe illness and death from COVID-19 than female patients.

Some alopecia treatments might help treat COVID-19, but more research is needed.

The document concludes that careful evaluation is key to diagnose and treat women with hair loss, with tests for thyroid, iron, and hormones as needed.

A man's baldness improved possibly due to a medication that blocks male hormones.