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Human skin and hair color variation is mainly due to melanin produced by a few genes, with melanin protecting against sun damage.

Male pattern baldness is mostly inherited, involves many genes, and is linked to other traits like early puberty and strong bones.

Higher testosterone levels can increase the risk of certain diseases like type 2 diabetes in women and prostate cancer in men, but can also protect against autoimmune diseases and hair loss. It also affects body fat and bone density.

Radiation therapy damages skin structure and immune function, causing inflammation and potential hair loss.

Activating the GDNF-GFRα1-RET signaling pathway could potentially promote skin and limb regeneration in humans and could be used to treat hair loss and promote wound healing.

Hair loss, known as Androgenetic Alopecia, is often caused by hormones and can be diagnosed using noninvasive techniques. Treatments include topical minoxidil and oral finasteride, with new treatments being explored. There may also be a link between this type of hair loss and heart disease risk.

Microneedling improves skin and hair conditions by enhancing treatment absorption and stimulating growth factors.

Increased free testosterone can lead to stronger bones and less body fat but also higher risks of prostate cancer, hair loss, spine issues, and high blood pressure.

GmMAX3b gene in soybeans boosts nodulation and affects hormone levels.

Scientists have improved 3D models of human skin for research and medical uses, but still face challenges in perfectly replicating real skin.

Biopolymers are increasingly used in cosmetics for their non-toxicity and skin benefits, with future biotech advancements likely to expand their applications.

Long-term high testosterone levels can improve bone density and reduce body fat but may increase the risk of prostate cancer and high blood pressure.

The new hairline classification and correction methods can improve the appearance of Asian women with wide or M-shaped foreheads.

Tadalafil is effective for treating urinary symptoms in men with BPH.

Severe alopecia areata greatly impacts quality of life, mental health, and daily activities.

Men with male pattern baldness have a higher risk of certain skin cancers, especially on the scalp.

Bald men may have a lower risk of testicular cancer.

Sleep problems and skin issues affect each other; poor sleep can worsen skin conditions, and some skin treatments can improve or harm sleep quality.

More research is needed to understand how testosterone is maintained in adult males.

The article concludes that uniform density hair restoration is generally preferred for its natural look, but the best approach depends on the individual's characteristics and preferences.

The Core Curriculum for Hair Restoration Surgery aims to improve doctor training for better, safer, and more natural-looking hair loss treatments.

The document concludes that understanding hair loss patterns and careful surgical techniques are key for successful hair transplantation in oral and maxillofacial surgery.

Some natural extracts and one hair tonic can promote hair growth in mice.

Hair transplantation can effectively restore a natural-looking hairline when properly planned and executed.

The study found specific hair and scalp patterns for different types of hair loss in Koreans, noting racial differences affect diagnosis.

Effective repair of bad hair transplants requires skilled techniques and careful use of donor hair, with strategies like reimplantation and camouflage, and new methods to minimize scarring.

Malnutrition can cause unusual eyelash growth and hair loss.

The essay suggests hair loss might be caused by changes in skull bones.