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The document explains different types of skin lesions and their characteristics, causes, and related conditions.

More dermal papilla cells in hair follicles lead to larger, healthier hair, while fewer cells cause hair thinning and loss.

Blocking the enzyme that turns testosterone into DHT can safely and effectively treat enlarged prostate.

Prostate cancer was a major health issue in 2009, especially for Black men, and targeting the 5alpha-reductase enzyme could help in its prevention and treatment.

Multiphoton microscopy is a promising tool for detailed skin imaging and could improve patient care if its challenges are addressed.

Testosterone replacement may improve sexual desire and bone health in women with low androgen levels, but more research is needed on its long-term safety.

Testosterone therapy aims to treat hormone deficiencies and various conditions safely and effectively, but requires careful patient monitoring due to potential side effects.

Male pattern baldness is an unintended side effect of the body's use of androgens for muscle growth, especially in those genetically prone to it.

The document describes how to tell different types of non-scarring hair loss apart by looking at hair and scalp tissue under a microscope.

Oxygen levels affect hair growth and color cells differently when they interact directly.

Using defensins to activate stem cells may improve skin aging signs without causing inflammation.

The study concluded that both estrogen and androgen receptors, which decrease with age, are linked to skin aging and may be hormonally regulated.

Fat-derived stem cells show promise for skin repair and reducing aging signs but need more research for consistent results.

Scientists found a gene in mice that causes early hearing loss.

Menopause can lead to skin and hair problems due to hormonal changes, but hormone replacement therapy might help slow these effects.

Estrogen therapy can reduce skin aging but has cancer risks.

Estrogens help reduce skin aging, and SERMs might offer similar benefits without the risks of hormone therapy.

Hair ages due to genetics and environmental factors, leading to graying and thinning, with treatments available for some conditions.

Hair grays due to oxidative stress and fewer functioning melanocytes.

Children's hair grows in different types from before birth through puberty, with growth rates and characteristics varying by age, sex, and race.

Skin aging is largely due to differences in stiffness and elasticity between skin layers, leading to wrinkles.

New treatments targeting skin stem cells show promise for skin repair, anti-aging, and cancer therapy.

Skin aging is caused by stem cell damage and can potentially be delayed with treatments like antioxidants and stem cell therapy.

DHT affects hair follicle cells by changing microRNA levels, leading to less cell growth and more cell death.

Aging scalp skin contributes to hair aging and loss, and more research is needed to develop better hair loss treatments.

UVB radiation changes the levels of certain microRNAs in skin cells, which may affect cell survival and hair growth.

Normal levels for certain hormones in Chinese women of reproductive age were identified.

Wounds can regenerate hair in young mice, but this ability declines with age, offering insights for improving tissue regeneration in the elderly.

Collagen XVII is important for skin aging and wound healing.

Conditioned media from human amniotic fluid-derived stem cells helps skin heal and protects against aging from sun exposure.