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Some African American women's central scalp hair loss is linked to genetics and past fungal scalp infections, with more research needed on other causes.

Certain medications including flutamide, spironolactone, and others effectively reduce excessive hair growth in women, especially when combined with lifestyle changes.

Men who think they are losing hair feel worse about themselves, especially if they are younger.

Minoxidil helps hair cells live longer and grow longer.

Women with PCOS have higher androgen levels that decrease with age but are still higher than in women without PCOS.

Hair growth can be induced by certain cells found at the base of hair follicles, and these cells may also influence hair development and regeneration.

Some chemotherapy can cause permanent hair loss.

Women with acromegaly often have irregular periods due to hormone imbalances and growth hormone effects.

Certain bacteria and fungi are linked to healthy scalps and dandruff, suggesting that the scalp's microbial balance affects its health.

Women with excess body hair feel psychological distress influenced by societal beauty standards, but distress isn't directly linked to the amount of hair.

People with alopecia areata have more Th17 cells and fewer Treg cells, which may be key to the condition's development.

Hair usually grows back 1-3 months after treatment for anagen effluvium, and children with Loose Anagen Hair Syndrome often improve by adolescence.

Caucasian women's hair appears thickest in their 20s, with perceived thinning after mid-30s due to both decreasing density and diameter.

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

Platelet-rich plasma treatment can significantly increase hair count and density in men with pattern baldness, and these improvements can last up to 3 months.

The study found that certain microRNAs are higher in the cells and lower in the fluid of women with a specific type of polycystic ovary syndrome, and one microRNA could potentially help diagnose the condition.

The study suggests smoking is common in HS patients but its role is unclear, and more research is needed to understand HS causes.

Alopecia in captive rhesus macaques is affected by season, sex, age, housing, and stress, with complex links between stress hormones and hair loss.

Melatonin implants and long daylight hours alter the timing of hormone release and hair growth in mouflon sheep.

The drug enzalutamide may reduce the ability of the virus causing COVID-19 to enter lung cells.

The control system for hair growth cycles is not well understood and needs more research.

Researchers created rat liver stem cells that could help repair liver failure in rats and may be useful for studying human liver diseases.

Mothers and newborns with dental fillings had higher mercury in their hair, but getting fillings during pregnancy didn't raise mercury levels further.

Topical vitamin D3 does not prevent hair loss from chemotherapy.

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

Plasmacytoid dendritic cells are a key factor in causing hair loss in alopecia areata and could help differentiate it from other hair loss conditions.

Obese women with PCOS are more likely to have fatty liver disease.

The VQ-Dermato is a reliable French questionnaire for measuring quality of life in chronic skin disorder patients.

Alopecia areata seriously lowers quality of life, especially affecting self-image, mental health, and social life.

A blood pressure drug, diltiazem, may also help treat influenza.