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Hair greying is caused by oxidative stress damaging hair follicles and melanocytes.

Anti-acne medications may work by reducing the activity of a protein involved in acne development.

Lower levels of certain brain chemicals are linked to worse PTSD symptoms in men.

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

Products should be called 'sperm-safe' only after thorough, well-designed tests.

Different types of androgens bind differently to two receptors, AR1 and AR2, in Atlantic croaker's brain and ovarian tissues, suggesting these receptors may control different androgen actions in fish.

Finasteride helps reduce heart issues and improves heart function.

Mutations in the LSS gene cause a rare type of hereditary hair loss.

Different factors affect where drugs are absorbed in the small intestine, which is important for effective medication use.

Some drugs may reduce prostatitis symptoms short-term with few side effects.

Impaired androgen production in 46,XY DSDs causes ambiguous genitalia and requires long-term care.

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

Glutamine metabolism affects hair stem cell maintenance and their ability to change back to stem cells.

Certain drugs that block specific enzymes can help treat prostate diseases.

Maintaining the right amount of retinoic acid is crucial for healthy hair and skin.

Noncoding dsRNA boosts hair growth by activating TLR3 and increasing retinoic acid.

The skin's ability to produce hormones is linked to various skin conditions, and better understanding this process could lead to new treatments.

Progesterone boosts alcohol's effect on brain, finasteride counters it.

The document concludes that more research is needed to understand excessive hair growth in women with normal hormone levels and regular ovulation.

Hair analysis for drugs needs a better understanding of how drugs enter hair, considering factors like hair structure and pigmentation.

Melatonin improves cashmere goat hair growth and quality by increasing antioxidants and reducing cell death.

Dutasteride effectively treats enlarged prostate, reduces prostate cancer risk, and promotes hair regrowth with few side effects.

Azathioprine's effectiveness and safety require careful monitoring and more research, especially regarding its use with corticosteroids and the role of TPMT status in patients.

Genetics play a role in acne, but how exactly they contribute is not fully understood.

Finasteride treatment in male rats causes long-lasting effects on depression-like behavior, brain cell growth, inflammation, and gut bacteria composition.

Androgen is important in controlling stem cell differentiation, reducing fat development, and increasing lean mass.

Dihydrotestosterone can be made from dehydroepiandrosterone in skin cells without needing testosterone.

5-alpha reductase inhibitors slightly increase the risk of sexual and mood side effects, and breast growth in men.

Existing drug dexamethasone may lower death risk in severe COVID-19 cases; more research needed for other drugs.

ALA-PDT is effective and safe for chronic X-ray dermatitis, providing complete or partial remission.