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The research suggests that the global distribution of PCOS is likely due to historical human migration and that genes affecting PCOS may have different impacts on males and females.

The LRRK2-G2019S mutation in Parkinson's disease has a lifetime penetrance of 25-35%, and finasteride may help reduce symptoms in adult male Tourette syndrome patients.

Finasteride reduces Tourette syndrome symptoms, but results may be limited due to potential biases.

Tumor suppressors help control inflammation in cancer and restoring their function could lead to new treatments.

Scarring alopecias are complex hair loss disorders that require early treatment to prevent permanent hair loss.

Flutamide effectively treats female pattern hair loss with low doses showing good liver tolerance.

Some children are born with unusually short, fine hair because their hair growth phase is short, but this often gets better by itself during puberty.

The study found that horizontal sections of scalp biopsies are better for analyzing hair loss, showing fewer hairs and more fine hairs in balding areas.

Excessive hair growth can be assessed by history, exam, and blood tests, and treated with medication like dexamethasone, birth control pills, and spironolactone.

Some women with PCOS have CYP21 mutations and IRS1 variants, but these genetic factors are not major contributors to PCOS.