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Basal cell carcinoma mostly starts from cells in the upper skin layers, not hair follicle stem cells.

Metformin helps with menstrual cycles and insulin levels in PCOS but is less effective for hair growth, diabetes prevention, and weight loss, and may improve fertility and reduce diabetes risk.

The Rotterdam Study found risk factors for elderly diseases, links between lifestyle and genetics with health conditions, and aimed to explore new areas like DNA methylation and sensory input effects on brain function.

Alopecia areata, a common autoimmune hair loss condition, often runs in families.

Stromal stem cells may help heal wounds by becoming structural cells or affecting the immune system, but more research is needed to understand how.

The modified Ferriman-Gallwey method is a useful tool for diagnosing hirsutism.

Chemicals and body size might change when puberty starts and progresses, but more research is needed to confirm this.

The document concludes that mouse models are helpful but have limitations for skin wound healing research, and suggests using larger animals and genetically modified mice for better human application.

The Rotterdam Study aims to understand disease causes in the elderly and has found new risk factors and genetic influences on various conditions.

The study found that sweat glands contain different types of stem cells that help with healing and maintaining healthy skin.

Zinc oxide nanoparticles in sunscreen do not penetrate deep into the skin.

Wnt signaling is crucial for skin development and health, and its disruption can cause skin diseases.

The document concludes that insulin resistance is key in PCOS development and early treatment is crucial to prevent complications.

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

Spironolactone treatment increases the amount of testosterone available in the body.

The guidelines advise against using testosterone and DHEA in women for most conditions due to safety and effectiveness concerns, but suggest considering testosterone for postmenopausal women with low sexual desire.

TGF-β is crucial for tissue repair and can cause diseases if not properly regulated.

Hoxc13 gene is essential for hair, nail, and papilla development.

Hair loss and aging are caused by the breakdown of a key protein in hair stem cells.

Melanocyte stem cells in hair follicles are key for hair color and could help treat greying and pigment disorders.

Middle-aged women with chronic telogen effluvium experience increased hair shedding but usually don't get significantly thinner hair.

Men have more severe COVID-19 outcomes than women.

Cells from balding scalps have more androgen receptors than cells from non-balding scalps.

Two main types of fibroblasts with unique functions and additional subtypes were identified in human skin.

Some patients taking finasteride or dutasteride may have ongoing sexual problems and depression even after stopping the medication.

Hair loss affects women's mental health more than men's, causing anxiety, low self-esteem, and social insecurity.

The Rotterdam Study aims to understand various diseases in older adults.

The document concludes that the 5 alpha-reductase enzymes are important in steroid metabolism and related to various human diseases, with inhibitors used to treat conditions like male pattern baldness and prostate issues.

Dutasteride more effective for hair growth, but has more side effects than finasteride.

MK-0773 safely increased muscle mass but did not improve muscle strength or function in elderly women with sarcopenia.