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Stressed fibroblasts greatly increase melanin production in hair, skin, and eye cells, mainly due to a growth factor called bFGF.

Genetic mutations can affect female sexual development, requiring personalized medical care.

Hair loss in men might be linked to changes in cell energy factories.

Human dermal stem cells can become functional skin pigment cells.

Increasing miR-149 reduces hair follicle stem cell growth and hair development by affecting certain cell growth pathways.

Pets in Egypt can pass skin fungus, especially Microsporum canis, to humans, with outdoor and young pets being more at risk.

Thiocyanate helps hair growth and can be supplemented in diet or applied topically.

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

Testosterone replacement may help post-menopausal women with androgen insufficiency, but more research is needed on its benefits and risks.

Different lab conditions and light treatment methods change how human skin cells respond to light therapy.

Europe needs a clear system to watch over cosmetics for safety and to make sure product claims are true.

COVID-19-related hair loss may have unique features compared to hair loss from other causes.

Old people's nails often have problems due to body changes, more diseases, and self-care difficulties, affecting their movement and hand use.

Understanding and tracking our body's natural daily rhythms could help improve heart health.

The conclusion is that proper recognition and treatment of skin conditions are crucial for the elderly due to changes in skin, nails, and hair with age, and the impact of these conditions on health and mobility.

Exosomes can improve skin health and offer new treatments for skin repair and rejuvenation.

Hair follicles on the scalp interact with and respond to the nervous system, influencing their own behavior and growth.

Hormones are crucial for regulating body functions and imbalances can lead to health issues.

Pregnancy can cause skin changes and affect existing skin conditions, with limited treatment options due to the need for fetal safety.

Redheaded people have higher levels of a vitamin D precursor, suggesting red hair may be an adaptation for better vitamin D synthesis in areas with less sunlight.

The Endocrine Society advised against routine testosterone therapy for women, citing a need for more research on long-term safety and a clear definition of androgen deficiency.

Androgen deprivation therapy for prostate cancer can cause sexual, physical, and psychological side effects, and doctors should manage these carefully.

Teloptosis is a key point in hair loss that could help in creating prevention-focused hair care strategies.

Stem cells help repair tissue mainly by releasing beneficial substances, not by replacing damaged cells.

The document explains hair growth and shedding, factors affecting it, and methods to evaluate hair loss, emphasizing the importance of skin biopsy for diagnosis.

Cell aging can be both good and bad for tissue repair.

Measuring reproductive hormones in brown bear hair could help identify their sex and reproductive state, but better collection methods or lab techniques are needed.

Testosterone therapy aims to treat hormone deficiencies and various conditions safely and effectively, but requires careful patient monitoring due to potential side effects.

Primary care doctors should address female sexual dysfunctions to improve women's sexual health and life quality.

Testosterone and dihydrotestosterone have similar effects on body composition and metabolic health in men.