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Different types of stem cells and their environments are key to skin repair and maintenance.

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

The conclusion is that PCOS is caused by ovarian sensitivity to hormones and disrupted hormone control, possibly due to ovarian factors, and more research is needed.

The conclusion is that Treg-targeted therapies have potential, but more knowledge of Treg biology is needed for effective treatments, including for cancer.

Normal skin cell renewal doesn't need RAR signaling, but vitamin A-related skin thickening does.

Oxidative stress contributes to hair graying and loss as we age.

Men generally have more severe COVID-19 cases and higher death rates than women due to biological differences.

Fat cells in the skin help start healing and form important repair cells after injury.

Stem cell plasticity is crucial for wound healing but can also contribute to cancer development.

Targeting androgen receptors could be a promising way to treat skin disorders with fewer side effects.

Minoxidil can help grow hair in mice by making cells grow and improving hair quality. More research needed.

Understanding how cells die in the skin is important for treating skin diseases and preventing hair loss.

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

Vitamin D has potential benefits for cancer prevention, heart health, diabetes, obesity, muscle function, skin health, and immune function, but clinical results are mixed and more research is needed.

Platelet-rich plasma might help with hair growth and skin conditions, but more research is needed to prove its effectiveness and safety.

The document concludes that while significant progress has been made in understanding skin biology and stem cells, more research is needed to fully understand their interactions with their environment.

Children, especially teenagers, can get severe SARS-CoV infection with symptoms similar to adults, but they typically recover well with supportive care.

Smoking harms the skin, causing early aging and increasing cancer risk, but stopping smoking can improve skin health.

Tiny particles from stem cells help activate hair growth cells and encourage hair growth in mice without being toxic.

Stress increases a factor in mice that leads to hair loss, and blocking this factor may prevent it.

Lowering testosterone speeds up wound healing in male mice.

UV radiation can help sterilize wounds and promote healing but requires careful use to avoid damaging cells.

Removing both Atr and Trp53 genes in adult mice causes severe tissue damage and death due to DNA damage.

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

Hair follicles are hormone-sensitive and involved in growth and other functions, with potential for new treatments, but more research is needed.

Minoxidil effectively treats severe hypertension but may cause side effects, so careful monitoring is needed.

The Wnt/β-catenin pathway helps tissue regeneration but can also cause fibrosis, and drugs that inhibit this pathway may aid in healing skin and heart tissues.

Sensitive skin is often caused by nerve fibers and environmental factors, and can be managed with mild skincare and professional advice.

Iranian veterans exposed to sulfur mustard suffer from long-term skin itching and eye damage, with some risk of skin cancer and ongoing management challenges.

Oxidative stress affects hair loss in men with androgenetic alopecia.