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Calcium affects where root hairs grow, but other unknown factors determine their growth direction.

Visible light can damage skin and most sunscreens don't block it well; more research is needed on its effects and protection methods.

Genetic variation in the androgen receptor gene mainly causes early-onset hair loss, with maternal inheritance playing a key role.

The ZIP7 gene helps control zinc levels in cells by moving zinc from the Golgi apparatus to the cytoplasm.

Stress stops hair growth in mice by causing early hair growth phase end and harmful inflammation through a specific nerve-related pathway.

A new microneedle patch made from hair proteins helps regrow hair faster and better than current treatments.

Opioid painkillers can cause many side effects, including breathing problems and addiction, but are generally considered safe when used properly.

Special fiber materials boost the healing properties of certain stem cells.

Regenerated fully functional hair follicles using stem cells, with potential for hair regrowth therapy.

Bone Morphogenetic Proteins (BMPs) help control skin health, hair growth, and color, and could potentially be used to treat skin and hair disorders.

Hair loss needs more research for better treatments.

Oestrogens are key for bone growth during puberty in both boys and girls.

Myrtle has various health benefits and potential for medicine development.

Zinc is effective for treating various skin conditions, including warts and acne.

CDP is crucial for lung and hair follicle cell development.

Chitosan nanofiber scaffolds improve skin healing and are promising for wound treatment.

Telocytes might help with skin repair and regeneration.

Some skin medications are safe during pregnancy and breastfeeding, but others can harm the baby and should be avoided.

Methotrexate treats various disorders by inhibiting DNA synthesis, but careful monitoring is needed to avoid toxicity and manage side effects.

Humans lost body hair relatively recently in evolution.

Congenital Adrenal Hyperplasia is a genetic disorder with two forms, causing symptoms like early puberty and severe acne, but can be identified through screening and treated with glucocorticoids.

Laser hair removal effectiveness depends on targeting hair structures without harming the skin, and improvements require more research and expert collaboration.

Trilostane effectively improved symptoms in dogs with a certain adrenal gland disorder.

Cathepsin L is essential for normal hair growth and development.

The Sonic hedgehog pathway is crucial for new hair growth during mouse skin healing.

Young adults have about 230,000 tactile nerve fibers, decreasing 5-8% per decade with age.

The document concludes that adenosine receptor agonists have potential for treating various conditions, but only a few are approved due to challenges like side effects and the need for selective activation.

Postpartum depression is linked to changes in brain chemicals, inflammation, stress, and certain genes, and can potentially be identified by markers like specific steroids, serotonin levels, and vitamin D levels.

Some viruses can cause cancer by changing cell processes and avoiding the immune system; vaccines and targeted treatments help reduce these cancers.

Microneedles improve drug delivery in various body parts, are safe and painless, and show promise in cosmetology, vaccination, insulin delivery, and other medical applications.