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Hair ages due to genetics and environmental factors, leading to graying and thinning, with treatments available for some conditions.

Higher free testosterone levels in men are linked to a stronger immune response, not weaker.

A new gene, JMJD1C, may affect testosterone levels in men.

Male hormones are important for hair and oil gland development and can cause conditions like excessive hair growth and acne.

Some Thai plants, especially Carthamus tinctorius, could help prevent hair loss and promote hair growth without adverse effects.

Nanotechnology in dermatology shows promise for better drug delivery and treatment effectiveness but requires more safety research.

Polycystic Ovary Syndrome is linked to higher risk of hypertension and heart disease.

Environmental factors at different levels control hair stem cell activity, which could lead to new hair growth and alopecia treatments.

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

Children's hair grows in different types from before birth through puberty, with growth rates and characteristics varying by age, sex, and race.

High proliferation and cell delamination drive early skin development, while later stages may not rely on cell division orientation.

The research identified new skin traits in mice, some linked to human skin conditions.

Wnt signaling is important for development and cell regulation but can cause diseases like cancer when not working properly.

The LRRK2-G2019S mutation in Parkinson's disease has a lifetime penetrance of 25-35%, and finasteride may help reduce symptoms in adult male Tourette syndrome patients.

Hair loss is common in lupus patients and can be permanent or reversible, depending on the type, with various treatments available.

Human skin produces sex hormones like estrogen and testosterone, influenced by ARO and StAR, which may affect skin elasticity and hair growth.

Testosterone and dihydrotestosterone affect hair growth, and new techniques like the folliculogram help study it, but fully understanding hair growth is still complex.

Hair loss in males involves inflammation, collagen buildup, and follicle damage, with severity increasing with age and baldness duration.

Excessive hair growth can be assessed by history, exam, and blood tests, and treated with medication like dexamethasone, birth control pills, and spironolactone.

Hidradenitis suppurativa may be related to hormones and patients often have metabolic disorders; more research is needed to understand this connection.

Women with PCOS have a higher risk of diabetes, heart problems, certain cancers, and mental health issues, but early treatment can help manage these risks.

The document concludes that sexual and psychiatric side effects from 5-alpha-reductase inhibitors are reported, but more high-quality research is needed to understand how often they occur.

5α reductase inhibitors treat hair loss but may cause sexual side effects and risks.

The document concludes that menopause should be seen as a natural part of aging and managed with personalized care and informed choices.

Most hair loss can be diagnosed with patient history and physical exam, and a few common types make up most cases.

Birth control pills combined with bicalutamide are more effective at reducing excessive hair growth in women with PCOS than birth control pills alone.

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

Ganoderma lucidum may help treat enlarged prostate in rats.

ATP increases melanin production in skin after UV exposure, with the P2X7 receptor being crucial for this process.

Permanent hair loss from cicatricial alopecia is treated by reducing inflammation and managing symptoms, but regrowth in scarred areas is unlikely.