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Amenorrhea, or the absence of periods, should be evaluated by age 15 or within five years of early breast development, and is most commonly caused by conditions like polycystic ovary syndrome and hypothalamic amenorrhea.

Hair follicles help magnesium get through the skin more effectively.

Understanding how epigenetic regulation affects stem cells is key to cancer insights and new treatments.

Male hormones cause different growth in identical human hair follicles due to their unique epigenetic characteristics.

The enzymes 5α-reductase and 3α/β-hydroxysteroid oxidoreductase help create brain-active substances from progesterone and testosterone, which could be used for treatment, but more research is needed to ensure their safety and effectiveness.

Apple polyphenols, especially from unripe apples, can help prevent cells from turning into fat cells.

Two-photon microscopy effectively tracks live stem cell activity in mouse skin with minimal harm and clear images.

Green tea component EGCG may help prevent hair loss by changing microRNA levels in certain scalp cells.

Adrenal glands delay the start of winter fur growth in mink.

Hair camouflage offers various options for hair loss, helping reduce psychological impact.

Monotreme hair structure and protein distribution are similar to other mammals, but their inner root sheath cornifies differently, suggesting a unique evolution from reptile skin.

SARS-CoV-2, the virus causing COVID-19, can affect all endocrine organs and systems, altering their function and potentially leading to disorders. Factors like diabetes and obesity increase infection risk and severity. Understanding these effects is key for effective treatment.

Acne is caused by multiple factors including oil production, bacteria, inflammation, and possibly diet and environment.

Telocytes in the scalp may help with skin regeneration and maintenance.

mTORC1 signaling needed for quick hair follicle recovery after radiation damage.

The study found average numbers for different types of hair follicles in the scalp and observed differences between men and women, suggesting reasons for more common hair shedding in women.

Diazoxide applied to the skin can increase hair growth without harmful side effects.

Minoxidil detects nitrite in water, creating a simple, cheap test.

PDGF-BB helps young melanocytes grow but stops mature ones from growing, and it makes melanocytes more specialized.

A circular RNA helps cashmere goat hair cells become hair follicles by blocking a molecule to boost a gene important for hair growth.

Eating less and exercising more, with personalized diet plans and realistic goals, can lead to weight loss and better health, but more research is needed for long-term success.

The study concluded that both estrogen and androgen receptors, which decrease with age, are linked to skin aging and may be hormonally regulated.

Taxol damages hair growth cells, causing hair loss.

Researchers had trouble finding enough participants for a trial on DHEA's effects on postmenopausal women's sexual desire.

The document concludes that doctors should carefully consider off-label drug use in dermatology and always inform patients, while more research is needed on the safety and effectiveness of such practices.

Finasteride affects frog testes by increasing testosterone, decreasing 5α-DHT, and impacting genes related to reproduction and other functions.

Melanocytes are diverse cells important for pigmentation and skin health, influenced by genetics and environment.

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

Akt2 protein is essential for normal cell division in early mouse embryos.

Hair growth genes work better with more glucose due to changes in gene-regulating markers.