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Acne severity is linked to higher levels of certain androgenic hormones, even when those levels are within the normal range.

The document explains hair biology, the causes of hair loss, and reviews various hair loss treatments.

Women with female pattern hair loss have higher levels of certain androgens, suggesting increased androgen exposure to hair follicles.

Hairless protein is crucial for healthy skin and hair, and its malfunction can cause hair loss.

Higher androstenedione levels in women with PCOS are linked to more severe symptoms.

Mutations in certain receptors can cause diseases and offer new treatment options.

Thyroid diseases may contribute to autoimmune skin diseases, and more research is needed on their relationship.

For women with moderate to severe unwanted hair growth or acne, birth control pills are the first choice, with other medications like cyproterone, spironolactone, flutamide, or finasteride as alternatives, and permanent hair removal should be done with electrolysis or laser.

The rat model showed early perimenopause with regular cycles and low hormones, and late perimenopause with irregular cycles and higher hormone levels.

Amenorrhea, or the absence of periods, should be evaluated by age 15 or within five years of early breast development, and is most commonly caused by conditions like polycystic ovary syndrome and hypothalamic amenorrhea.

Men with male pattern hair loss have different levels of certain hormones compared to men without hair loss.

Researchers found a new mutation causing total hair loss from birth.

Most treatments for hair loss in 1997 were not effective for most people, and maintaining hair growth was difficult.

The study concluded that similar pathways regulate hair growth in dogs and mice, and these pathways are disrupted in dogs with Alopecia X, affecting stem cells and hormone metabolism.

Mice with autoimmune hair loss showed signs of heart problems.

New treatments for prostate cancer are less toxic and show promise, but more research is needed to enhance their effectiveness and reduce side effects.

Prostate-specific antigen may be a new marker for excess male hormones in women with polycystic ovary syndrome.

Birth control pills can help reduce mild to moderate acne in women.

COVID-19 and hypopituitarism (reduced pituitary gland function) are linked, with the latter's related health issues potentially worsening COVID-19 outcomes, and COVID-19 possibly increasing risk for pituitary complications.

Parathyroid hormones are important for hair growth, but their use in treating hair loss from chemotherapy is still uncertain.

A certain gene variant may increase the risk of polycystic ovary syndrome in Chinese women.

The same hormone can affect gene expression differently in various tissues, which could lead to new treatments for conditions like hair loss.

The conclusion is that a thorough approach is needed to diagnose and manage hyperandrogenism in teenage girls, recognizing its major psychological and health effects.

Women with low SHBG levels and a high 3a-diol G to SHBG ratio are likely to experience female pattern baldness, possibly due to a slight excess of androgens affecting sensitive hair bulbs.

5α-reductase inhibitors may worsen sexual drive and spontaneous erections but don't worsen existing erectile or ejaculatory problems.

Estrogens are key for bone growth spurts in both boys and girls and affect growth into adulthood.

Excess male hormones in postmenopausal women can cause health issues and increase the risk of heart disease and diabetes; treatment depends on the cause.

New signs like changes in blood markers, physical symptoms, and behavioral shifts may help detect hidden steroid use in athletes.

Male pattern baldness may be caused by factors like poor blood circulation, scalp tension, stress, and hormonal imbalances, but the exact causes are still unclear.

Baldness in men with prostate cancer is linked to higher levels of certain sex hormones, but chest hair density is not.