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Stress hormone corticosterone blocks a growth factor to slow down hair stem cell activity and hair growth.

Muscles and nerves that cause goosebumps also help control hair growth.

Fat cells are important for healthy skin, hair growth, and healing, and changes in these cells can affect skin conditions and aging.

Japanese women typically start experiencing hair loss after 40, with reduced hair density and thickness being the main factors.

The circadian clock influences the behavior and regeneration of stem cells in the body.

Aging mice have slower hair regeneration due to changes in signal balance, but the environment, not stem cell loss, controls this, suggesting treatments could focus on environmental factors.

Progress has been made in skin and nerve regeneration, but more research is needed to improve methods and ensure safety.

Exosomes from dermal papilla cells help hair growth by making hair follicle stem cells multiply and change.

Cancer can hijack the body's cell repair system to promote tumor growth, and targeting this process may improve cancer treatments.

FFA's causes may include environmental triggers and genetic factors.

Early onset and pustules indicate severe hair follicle inflammation, and while antibiotics help, the condition often worsens after treatment stops.

Skin fat has important roles in hair growth, skin repair, immune defense, and aging, and could be targeted for skin and hair treatments.

Toll-like receptors are important for wound healing, but can slow it down in diabetic wounds.

Hair follicle stem cells are a promising source for tissue repair and treating skin or hair diseases.

Lamins are vital for cell survival, organ development, and preventing premature aging.

Women with thinning hair have thinner hair strands than women without hair loss.

Improving insulin sensitivity and weight loss can help manage polycystic ovary syndrome (PCOS).

PCOS symptoms change with age; younger women have higher androgen levels and less metabolic issues, while older women face more metabolic challenges despite milder PCOS symptoms.

PCOS is often linked to insulin resistance and obesity, and weight loss can improve symptoms.

The document concludes that understanding hair and feather regeneration can help develop new regenerative medicine strategies.

Some breast cancer patients still experience hair loss three years after chemotherapy, especially with taxane-based treatments.

Environmental factors at different levels control hair stem cell activity, which could lead to new hair growth and alopecia treatments.

The conclusion is that individual differences in COVID-19 severity are influenced by factors like age, sex, race, and genetics, which are important for personalized medicine.

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

Female pattern hair loss is common, linked to polycystic ovarian syndrome, and treated with topical Minoxidil.

Older skin has higher cancer risk due to inflammation and stem cell issues.

Human hair contains diverse proteins, including keratins and histones, which could help assess hair health and aging.

Disruptions in hair follicle fibroblast dynamics can cause hair growth problems.

Defective mitochondrial DNA replication causes aging symptoms and increased oxidative damage in mice.

The document concludes that more research is needed to understand how to treat muscle pain with drugs.