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Trichotillomania may have a genetic link to psychiatric disorders.

A new method using human lung cells helps find drugs to block and reduce inflammation from SARS-CoV-2.

Signals from skin cells controlled by Rac proteins help turn certain precursor cells into white fat cells.

The document concludes that while some organisms can regenerate body parts, mammals generally cannot, and cancer progression is complex, involving mutations rather than a strict stem cell hierarchy.

Hair loss in Androgenetic alopecia (AGA) is due to altered cell sensitivity to hormones, not increased hormone levels. Hair growth periods shorten over time, causing hair to become thinner and shorter. This is linked to miscommunication between cell pathways in hair follicles. There's also a change in gene expression related to blood vessels and cell growth in balding hair follicles. The exact molecular causes of AGA are still unclear.

The document reviews various hair and nail disorders, their causes, and treatments, emphasizing the need for proper diagnosis and the link between nail changes and systemic diseases.

Cats lose fur due to various reasons, including allergies, infections, genetics, hormones, diet, cancer, stress, and some conditions are treatable while others are not.

Hair growth dysfunction involves various conditions with limited treatment options.

Herbal remedies show promise for managing premature hair greying but need more research.

Finasteride lowers cortisol and raises testosterone levels in rats.