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

Hair elemental analysis could be useful for health and exposure assessment but requires more standardization and research.

Certain steroids in the brain affect mood and symptoms of depression, and treatments targeting these steroids show promise for improving these symptoms.

The three estrogen receptor genes are highly expressed in zebrafish neuromasts during development.

The circadian clock influences the behavior and regeneration of stem cells in the body.

Antioxidants may help fight oxidative stress linked to autoimmune skin diseases.

S5αR inhibitors might help treat schizophrenia and other mental disorders but need more research.

The document explains how the male reproductive system works, its role in making testosterone, and how conditions like obesity can disrupt it, leading to low testosterone and fertility issues.

Prolactin affects the production of different keratins in human hair, which could lead to new treatments for skin and hair disorders.

Hair growth is influenced by interactions between skin layers, growth factors, and hormones, but the exact mechanisms are not fully understood.

High doses of cyproterone acetate increase the risk of brain tumors in women, but the risk decreases after stopping the medication.

Post-finasteride patients show changed neuroactive steroid levels, possibly causing erectile dysfunction and depression.

Minoxidil needs activation to work, and minoxidil sulfate helps with hair growth and blood pressure.

Cannabinoids may help treat chronic and chemotherapy-induced neuropathic pain, but more research is needed to confirm their effectiveness and safety.

The document concludes that future heart disease research should account for sex-specific differences to improve diagnosis, treatment, and outcomes.

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

Hair follicle regeneration possible, more research needed.

The skin is the largest organ, protecting the body, regulating temperature, and producing hormones.

New treatments for a chronic skin condition show promise, but individualized plans are crucial due to varying responses.

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

Finasteride reduces alcohol withdrawal severity in male mice but increases it in female mice.

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.

Hair follicles on the scalp interact with and respond to the nervous system, influencing their own behavior and growth.

Rats had lasting erectile problems after stopping a certain medication.

The document concludes that accurate diagnosis and treatment of scalp itch require differentiating between various conditions using a proposed five-step evaluation process.

Researchers created a mouse model for Cushing's syndrome to study glucocorticoid excess and potential treatments.

Antiandrogens have important biological effects, but more research is needed to understand them fully and compare their effectiveness and side effects to other treatments.

Skin aging is caused by stem cell damage and can potentially be delayed with treatments like antioxidants and stem cell therapy.

Allopregnanolone increases growth and changes gene activity in human brain cancer cells.

Recognizing and managing skin-related psychiatric disorders in children is crucial for effective treatment.