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Different ethnic groups have unique hair growth patterns, with African hair growing slower and less dense, Asian hair growing fast but sparse, and Caucasian hair being densest; men are more likely to experience hair loss than women.

Stress increases nerve fibers and immune cell activity in mouse skin, possibly worsening skin conditions.

Platelet-rich plasma may help with hair growth and skin quality but more research is needed to confirm its effectiveness.

New single-cell analysis techniques are improving our understanding of stem cells and could help in treating diseases.

Finasteride may cause slight depression and anxiety.

The sebaceous gland has more roles than just producing sebum and contributing to acne, and new research could lead to better skin disease treatments.

Turing patterns are now recognized as important in developmental biology.

Activating the Wnt/β-catenin pathway could lead to new hair loss treatments.

The document concludes that cosmetic surgery is still mainly a practice for women and the gender gap in this field is expected to continue.

Some common medications can harm male fertility, but many effects can be reversed.

Hormones, especially androgens, play a key role in acne, which can be a symptom of systemic diseases like PCOS and may require targeted treatment.

Certain mice without specific receptors or mast cells don't lose hair from stress.

5α-reductase inhibitors can cause sexual problems, higher risk of aggressive prostate cancer, and depression.

Zinc deficiency in children can cause skin issues and can be serious if not diagnosed and treated properly.

The conclusion is that recognizing hair growth cycles can improve the precision of dietary and health assessments from hair analysis.

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

The conclusion is that the best initial treatment for hirsutism is usually oral contraceptives, with the addition of antiandrogens or insulin sensitizers if needed, and topical eflornithine or laser treatments as supplementary options.

Stress increases certain chemicals in the skin and nerves, which might worsen skin conditions.

Hair loss in women may have causes other than hormones.

DHT, a testosterone byproduct, causes male pattern baldness.

Finasteride might lower the risk of low-grade prostate cancer but not high-grade cancer, while alpha-blockers might reduce high-grade cancer risk.

DHEA did not improve sexual function, well-being, or menopausal symptoms in postmenopausal women with low libido but caused side effects like acne and increased facial hair.

Injecting a special gel with human protein particles can help hair grow.

Female pattern hair loss diagnosed by scalp appearance, treated with combined therapies and targeted approaches.

Taking DHEA for a year is generally safe for postmenopausal women but may cause acne and more facial hair without improving metabolism or aging.

Ketoconazole reduced hair growth and improved acne in women, but caused side effects needing careful monitoring.

Gonadal dysgenesis, like Turner's and Klinefelter's syndromes, negatively affects bone health, but hormone treatments can help.

High levels of androgens during early development may cause PCOS-like symptoms.

FAGA diagnosis uses blood tests and trichoscopy, with treatments like topical minoxidil, oral anti-androgens, and hormone-modulating drugs.

Trichoscopy is good for diagnosing and monitoring hair and scalp problems in children but needs more research for certain conditions.