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The document discusses hair and nail conditions, updates on treatments for alopecia, and controversies around finasteride use.

Older hair follicle stem cells have a reduced ability to renew themselves, leading to more hair loss.

Both Th1 and Th2 immune responses are increased in alopecia areata, with Th2 response more strongly linked to how severe the disease is.

Activating Nrf2 helps wounds heal faster by increasing hair follicle stem cells.

Topical tofacitinib is effective in promoting hair growth for non-scarring alopecia.

The research found that people's hair proteins vary, especially by ethnicity and body part, which could help identify individuals in forensic science.

The research found that people's hair proteins vary by individual and body part, with some differences between ethnic groups, which could help in forensics.

The document concludes that accurate diagnosis and management of PCOS are crucial due to its associated health risks.

Dermal stem cells help regenerate hair follicles and heal skin wounds.

Chemotherapy in the first trimester of pregnancy is risky, but in the second and third trimesters, it's generally safe with careful drug selection and timing.

Growing human skin cells in a 3D environment can stimulate new hair growth.

A protein from certain immune cells is key for new hair growth after skin injury in mice.

Telogen effluvium is a reversible hair loss condition that requires a detailed diagnosis and often resolves on its own.

Researchers created human hair follicles using a new method that could help treat hair loss.

Alopecia areata involves immune activation in the scalp, suggesting treatments targeting TH1, TH2, and IL-23 pathways.

Hormones, especially androgens, play a big role in acne, but most acne sufferers don't have a hormone disorder. Hormonal treatments, including birth control pills, can be very effective for women whose acne doesn't improve with regular treatments.

Men, especially older ones with health issues like prostate cancer, may have worse COVID-19 outcomes and could benefit from therapies targeting male hormones.

Lampreys have a functional vitamin D receptor that may help detoxify harmful substances.

Newborn mouse skin cells can grow hair and this process can be recreated in adult cells to potentially help with hair loss.

Vitiligo affects overall health and self-esteem, needing more research and awareness.

Dermatoscopy is a useful tool for diagnosing hair disorders and can help choose samples for more detailed analysis.

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

DHT, a testosterone byproduct, causes male pattern baldness.

Accurate diagnosis is key for treating different kinds of hair loss, and immune response variations may affect the condition and treatment results.

Fat cells are important for tissue repair and stem cell support in various body parts.

The conclusion suggests that prostate cancer should be classified by castration status and that new therapies targeting androgen receptor signaling show promise.

Certain signals are important for reducing specific chemical markers on hair follicle stem cells during rest periods, which is necessary for healthy hair growth.

People who carry the 21-Hydroxylase Deficiency gene are not more likely to have excessive male hormone levels.

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.

Keratin 17 is modified by RSK1 in response to growth and stress, affecting skin growth and stress response.