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

Animals that change color with the seasons mainly do so in response to daylight changes, but climate change is causing camouflage problems that may require evolutionary changes.

Lignans and neolignans from plants may help protect against various health issues, including cancer and heart disease.

Too much Smad7 can cause serious changes in skin tissues, including problems with hair growth, thymus shrinkage, and eye development issues.

Melatonin helps regulate hair growth and protects the hair follicle from stress.

Targeting hair follicles can improve skin treatments and reduce side effects.

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

Olive oil compounds may help prevent cancer in animals, but human results are mixed.

New treatments for Alopecia Areata show promise but need to be more effective and affordable.

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

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

The document concludes that adult mammalian skin contains multiple stem cell populations with specific markers, important for understanding skin regeneration and related conditions.

The p75 neurotrophin receptor is important for hair follicle regression by controlling cell death.

Lichen planus pigmentosus causes dark skin patches and is treated by avoiding triggers and using anti-inflammatory medications.

The document concludes that accurate diagnosis of different types of hair loss requires careful examination of hair and scalp tissue, considering both clinical and microscopic features.

Vitiligo is linked to autoimmune diseases and hearing issues, so hearing tests are recommended for patients.

Mice studies show that Protein Phosphatase 2A is crucial for cell growth, development, and disease prevention.

Exosomes from dermal papilla cells can help grow hair and might treat hair loss.

Older adults have a high rate of skin cancers like basal cell carcinoma and melanoma, mainly due to UV exposure and age.

Skin changes can help diagnose and manage endocrine disorders like thyroid problems, diabetes, and adrenal gland conditions.

A certain smell receptor in hair follicles can affect hair growth when activated by a synthetic sandalwood scent.

The conclusion is that managing androgen excess requires long-term treatment, including hormonal contraceptives and androgen blockers, with follow-up after six months.

Vitiligo affects overall health and self-esteem, needing more research and awareness.

The document concludes that various clinical methods are used to assess ageing skin and the effectiveness of anti-ageing products.

Menopause reduces skin collagen and elasticity, and while estrogen therapy can help, its risks require careful consideration.

Human skin cells produce proenkephalin, which changes with environmental factors and skin diseases.

Women with PCOS often have skin problems like excessive hair, acne, hair loss, and dark patches, which can be treated with hormonal and non-hormonal therapies.

Certain mice without specific receptors or mast cells don't lose hair from stress.

CCCA is a hair loss type affecting African women, possibly caused by grooming and chemicals, with various treatments and needing more research.

The document concludes that skin biopsies, genetic and environmental factors, and specific treatments are important in managing cutaneous lupus erythematosus.