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Some autistic children may have higher levels of male hormones, which could be linked to aggression.

Certain maturity signs appear before and after the first release of sperm in boys.

The mouse hairy ears mutation causes longer ear hair due to changes in gene expression.

The Men's Training Cup Keep Training masturbation aid may help delay ejaculation and improve erectile function.

The new hair loss treatment combining nitric oxide and minoxidil in a special carrier is effective for hair regrowth.

Tianma Gouteng decoction may help prevent hair loss and promote hair growth.

New biomaterial treatments for baldness show promise, with options depending on patient needs.

Male androgenetic alopecia (MAA) is a common, hereditary hair loss condition in men, linked to heart disease, and can be treated with minoxidil, finasteride, or hair transplantation.

Androgens increase muscle mass by promoting myoblast growth through ornithine decarboxylase.

Modified stem cells from umbilical cord blood can make hair grow faster.

Hormone therapy affects cancer risks in transgender individuals differently than in cisgender people, and more research is needed to understand these risks and improve cancer screening guidelines.

The skin systems of jawed vertebrates evolved diverse appendages like hair and scales from a common structure over 420 million years ago.

Prunus mira kernels contain components that can promote hair growth in mice.

Exosomes from skin cells can boost hair growth by stimulating a gene called LEF1.

Natural products may help treat hair loss by promoting hair growth with fewer side effects.

Nanostructured delivery systems could potentially improve hair loss treatment by targeting drugs to hair follicles, reducing side effects and dosage, but the best size, charge, and materials for these systems need further investigation.

New treatments are needed for hair loss, and cell therapies might reverse hair thinning.

Epitestosterone may act as a weak antiandrogen and can inhibit an enzyme involved in testosterone metabolism.

Enzymes called 5α-reductases have many body functions and need more research to safely use inhibitors.

Muscles can make their own androgens, which may help muscle growth.

Gender differences affect allergy prevalence, severity, and response to environmental toxins, with women often more affected than men.

Finasteride may cause changes in dopamine-related genes, possibly leading to post-finasteride syndrome.

Androgenetic alopecia causes hair loss, impacting self-esteem and confidence.

The levonorgestrel implant increases free testosterone and lowers SHBG more than DMPA-IM and the copper IUD.

Gonadal hormones may influence sex differences in play fighting in animals, but their effect on human spatial behavior is unclear and needs more research.

Androgens are important for female fertility and could help in IVF treatment, but also play a role in causing PCOS.

Transgender women can develop feminine traits and improve their quality of life through hormone therapy and surgery, but results vary and access to surgery can be limited.

Men who start puberty later may have lower sperm quality and different hormone levels in adulthood.

Hair is important for protection, social interaction, and temperature control, and is made of a growth cycle-influenced follicle and a complex shaft.

The guideline provides healthcare professionals in South Africa with instructions for comprehensive, multidisciplinary gender-affirming care, including HIV prevention and treatment for transgender and gender diverse individuals.