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The skin's internal clock affects healing, cancer risk, aging, immunity, and hair growth, and disruptions can harm skin health.

Low doses of some substances can be beneficial, while high doses can be harmful or toxic.

New targets for making and using brain-synthesized steroids could lead to better treatments for brain disorders and alcoholism.

One minoxidil-sensitive potassium channel exists in human hair follicles.

Nerves and chemicals in the body can affect hair growth and loss.

Finasteride may cause slight depression and anxiety.

Certain genetic variations in the AR and ERβ genes can affect androgen levels in women.

Human epidermal neural crest stem cells can become bone and skin pigment cells, making them useful for therapies.

Growth factors are crucial for hair development and could help treat hair diseases.

Eating 500 fewer calories a day and making lifestyle changes can improve PCOS symptoms and reduce diabetes risk; more research is needed on its causes and treatments.

Alopecia areata is likely caused by a combination of genetic factors and immune system dysfunction, and may represent different diseases with various causes.

Cholesterol sulfate buildup due to a genetic mutation disrupts the skin barrier, leading to the scaling skin seen in X-linked ichthyosis.

The document concludes that diagnosing and treating Human African Trypanosomiasis is challenging, but new treatments like fexinidazole are promising.

TNF family proteins are crucial for the development of skin features like hair, teeth, and mammary glands.

Clomipramine may significantly reduce hair-pulling in Trichotillomania, but more research is needed on treatments and early onset cases.

The conclusion is that tissue structure is key for stem cell communication and maintaining healthy tissues.

Certain steroids in the brain affect mood and symptoms of depression, and treatments targeting these steroids show promise for improving these symptoms.

Finasteride can cause lasting sexual, emotional, and cognitive issues, with varying severity.

Many COVID-19 survivors experience long-term symptoms like fatigue and sleep issues, needing ongoing medical support.

Excessive selenium from a supplement caused toxicity but patients recovered with care.

Liver transplantation is a viable option for children with propionic acidemia, improving quality of life and diet, but does not remove all risks and long-term brain outcomes are uncertain.

Aging mice have slower hair regeneration due to changes in signal balance, but the environment, not stem cell loss, controls this, suggesting treatments could focus on environmental factors.

Androgens play a role in female sexual function, and testosterone therapy can help women with low sexual desire, but more research is needed on treatments and long-term safety.

Engineered exosomes show promise for improving wound healing but face challenges in clinical use.

S100A4 and S100A6 proteins may activate stem cells for hair follicle regeneration and could be potential targets for hair loss treatments.

Testosterone treatment effectively causes male physical development in transgender male adolescents but may lead to side effects like acne, higher BMI and blood pressure, lower good cholesterol, and decreased bone density.

Tissue-resident memory T cells can protect against infections and cancer but may also contribute to autoimmune diseases.

Red ginseng may improve immunity, fatigue, memory, blood circulation, and menopausal symptoms, and is generally safe to consume.

Hair greying is caused by oxidative stress damaging hair follicles and melanocytes.

Finasteride increases hair weight and count in men with hair loss.