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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.

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

Manipulating the catagen and telogen phases of hair growth could lead to treatments for hair disorders.

Keratin 15 is not a reliable sole marker for identifying epidermal stem cells because it's found in various cell types.

Correcting nutrient deficiencies may help with hair loss, but the benefits of supplements without a deficiency are uncertain and could be harmful.

Some treatments, like corticosteroids and sensitizing agents, can help with alopecia areata, but more high-quality research is needed.

Iron deficiency common in women, not always linked to hair loss; more research needed.

Genetics and hormones cause hair loss; finasteride treats it safely.

Edible seeds from the Cucurbitaceae family like pumpkin and watermelon seeds are nutritious and may have health benefits, but eating too much can cause side effects.

Low doses of mixed chemicals cause permanent reproductive malformations in male rats.

The document concludes that future heart disease research should account for sex-specific differences to improve diagnosis, treatment, and outcomes.

Goat reproductive activity and coat growth are affected by light and temperature, with temperature altering prolactin levels and hair growth, but not melatonin or estrus onset.

Testosterone and dihydrotestosterone affect hair growth, and new techniques like the folliculogram help study it, but fully understanding hair growth is still complex.

Melatonin improved mental health and metabolism in women with PCOS.

The conclusion is that hirsutism should be diagnosed and treated because it affects quality of life and may signal other health problems.

Behavioral dermatology treats skin problems by considering both emotional and physical factors.

Some congenital hair disorders improve in childhood or with treatments like minoxidil and retinoids, while others like Netherton syndrome and trichothiodystrophy have a poor prognosis.

Some medications might reverse gray hair, especially those that reduce inflammation or stimulate pigment production, and vitamin B might help.

Changes in keratin affect skin health and can lead to skin disorders like blistering diseases and psoriasis.

New compounds were found to help increase hair growth and decrease hair loss.

Acitretin is effective for severe psoriasis and can be used long-term due to no immunosuppression, but must be carefully monitored for side effects and is not for pregnant women.

An 81-year-old man's white hair began to regain its original color while he was treated with lenalidomide, suggesting that graying hair might be reversible.

All types of Platelet-Rich Plasma (PRP) can treat hair loss, but homologous PRP works best due to its higher platelet count and growth factors from multiple donors.

The cause of atypical Cushing's syndrome in dogs, possibly linked to sex hormones, is not yet proven.

More research is needed to determine if iron deficiency causes hair loss.

Some chemicals absorbed through the skin can cause serious health problems.

miR-140-5p in certain cell vesicles helps hair growth by boosting cell proliferation.

Korean patients with PCOS often have skin problems like acne and excess hair, with different symptoms based on their specific PCOS type.

Researchers found that most genes affecting drug responses are not fully covered by commercial SNP chips, suggesting the need for more comprehensive tools to optimize drug selection based on genetics.

Understanding hair biology is key to developing better treatments for hair and scalp issues.