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Alopecia areata is an autoimmune disease causing patchy hair loss, often with other autoimmune disorders, but its exact causes are unknown.

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

Different types of stem cells with unique roles exist in blood, skin, and intestines, and this variety is important for tissue repair.

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

Hair elemental analysis could be useful for health and exposure assessment but requires more standardization and research.

The skin protects the body and is constantly renewed by stem cells; disruptions can lead to cancer.

Mouse skin can produce and process serotonin, with variations depending on hair cycle, body location, and mouse strain.

Environmental factors, hormones, nutrition, and stress all significantly affect skin health and aging.

Beta-sitosterol has potential health benefits but needs more research to fully understand its effects and improve its use in treatments.

Prostate cancer prevention includes diet changes, supplements, and medications, with more answers expected soon.

The document concludes that for hair and feather growth, it's better to target the environment around stem cells than the cells themselves.

The p53 protein has complex, sometimes contradictory functions, including tumor suppression and promoting cell survival.

New treatments for severe hair loss often fail, but some patients see hair regrowth with specific therapies, and treatment should be tailored to the individual's situation.

Eclipta alba has many health benefits and contains compounds with potential for drug development.

Damaging mitochondrial DNA in mice speeds up aging due to increased reactive oxygen species, not through the p53/p21 pathway.

Plant-based ingredients are effective and safe for modern skincare products.

The nutritional supplement improved hair density and reduced hair loss in women with female pattern hair loss.

ΔNp63α helps control a protein that stops cancer cells from spreading.

Androgen receptor signaling causes early aging of cells important for hair growth by damaging their DNA.

Nanomaterials in biomedicine can improve treatments but may have risks like toxicity, needing more safety research.

Taking 5α-reductase inhibitors does not significantly increase the risk of breast cancer in men.

The new lab-grown skin model is good for testing sunscreen's protection against DNA damage from UV light.

Hibiscus rosa-sinensis may help treat various health issues and promote hair growth, but more research is needed for safety.

Budesonide and N-acetylcysteine reduced tumors and alopecia in mice, regardless of FHIT gene status.

Dihydrotestosterone causes p27 protein breakdown in ovarian and breast cancer cells by binding with SKP2.

Men with more vanadium in their blood and who drink less soy milk are more likely to have hair loss.

Hair greying is linked to reduced ATM protein in hair cells, which protects against stress and damage.

Ionizing radiation causes irreversible skin damage, with single doses leading to acute injury and hair graying, and fractional doses causing more severe long-term tissue damage.

A new painless method to collect hair follicles helps study DNA damage and aging.

No definitive link between finasteride and male breast cancer, but further research is needed.