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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.

Testosterone is crucial for development, growth, and various body functions in mammals.

The chapter explains the causes of excessive hair growth and masculinization in women and how to measure hormone levels related to these conditions.

Two drugs, finasteride and minoxidil, are approved for hair loss treatment, but new therapies are being developed.

α-spinasterol from Melandrium firmum can help reduce prostate enlargement.

Hormones and their receptors, especially androgens, play a key role in hair growth and disorders like baldness.

Diet changes can help reduce acne by limiting certain hormones.

Reduced androgens linked to kinky hair disorder and hair loss; 5a-reductase inhibitors may help.

The model suggests that scalp tension could lead to hair loss, with factors like blood vessel hardening, enlarged oil glands, and poor microcirculation also playing a role. It also hints at a possible link between skull shape and baldness pattern.

Finasteride lowers DHT levels and raises testosterone in a dose-dependent way.

Modern hair restoration techniques can effectively treat hair loss and provide natural-looking results.

Finasteride effectively treats BPH, but needs more trials to understand potential.

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

5α‐reductase isozymes are crucial for prostate development and health, and targeting them can help prevent and treat prostate issues.

Combining finasteride and black soybean extract better protects hair cells from damage and may treat hair loss effectively with fewer side effects.

AGA is a genetic, hormonal hair loss treated with finasteride, minoxidil, and supplements, but new compounds are being developed.

Hormones and genetics play key roles in male and female baldness, which can affect mental health and may be linked to other health issues.

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

Androgens like testosterone affect hair growth and oil production differently across body parts and individuals.

Androgen conjugates might be better indicators of skin sensitivity to hormones in women with excessive hair growth.

Finasteride and dutasteride may help prevent hair loss but could cause side effects like sexual dysfunction and psychological issues.

GI198745 is more potent and longer-lasting than finasteride, potentially better for treating hair loss.

Anti-androgens can help manage some PCOS symptoms better than metformin but are not more effective than placebos or birth control pills for other symptoms.

New treatments for male hypogonadism are effective and should be personalized.

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

Spironolactone reduces the enzyme activity that converts testosterone to DHT, helping treat excessive hair growth in women.

Astragalus sinicus extracts may help promote hair growth and treat hair loss.

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

AGA, a common hair loss, is caused by genetics, hormones, age, and environmental factors.

Testosterone causes hair loss in AGA mice, which are good for testing baldness treatments, and both minoxidil and cyproterone acetate can prevent this hair loss.