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Long-term high testosterone levels can improve bone density and reduce body fat but may increase the risk of prostate cancer and high blood pressure.

A woman with Parry-Romberg syndrome developed new curly hair on one side of her scalp, a condition not previously linked to the syndrome.

Odontogenic keratocysts are caused by abnormal Hedgehog signaling and can lead to tooth and bone issues.

Stem cell niches are crucial for regulating stem cell renewal and differentiation, and understanding them can help in developing regenerative therapies.

Whale genes show changes that help them live in water, like less hair and better flippers.

Leucaena leucocephala is nutritious but needs careful processing to remove toxins.

Mice with extra human KLK14 had hair and skin problems, including weaker cell bonds and inflammation, linked to Netherton syndrome.

Wnt activation shows promise for regenerative medicine but requires selective targeting to minimize risks like cancer.

The document concludes that cosmetics need biocompatible, eco-friendly ingredients due to aging populations and demand for effective products.

The secretions of mesenchymal stem cells could be used for healing without using the cells themselves.

Hair follicles help absorb and store topical compounds, aiding targeted drug delivery.

Low-Level Laser Therapy is effective and safe for hair growth with minimal side effects.

Keratose, derived from human hair, is a non-toxic biomaterial good for tissue regeneration and integrates well with body tissues.

Vitamin D has potential benefits for cancer prevention, heart health, diabetes, obesity, muscle function, skin health, and immune function, but clinical results are mixed and more research is needed.

Hard skin features like scales, feathers, and hair evolved through specific protein changes in different animal groups.

Fat tissue cells are a promising option for healing various diseases, but more research is needed to ensure they are safe and effective.

Acne is a chronic disease linked to various systemic conditions and has significant psychological and social effects.

Essential oils from Chamaecyparis obtusa may help hair grow by increasing a growth-related gene.

PTHrP and its receptor can control blood vessel growth and hair development in mouse skin.

5-alpha-reductase inhibitors may cause a low incidence of erectile dysfunction that decreases over time.

Coating surfaces with human hair keratin improves the growth and consistency of important stem cells for medical use.

Teucrium polium extracts are non-toxic and effectively speed up wound healing.

The new method for isolating stem cells from fat is simple and effective, producing cells that grow faster and are better for hair regeneration.

The document concludes that certain chemicals can help maintain stem cell pluripotency and that understanding cell states is crucial for tissue regeneration.

Vitamin E in the diet might help protect against hair loss caused by the chemotherapy drug doxorubicin in rabbits.

Using skin stem cells and certain molecules might lead to scar-free skin healing.

A new compound, BOI, can help hair grow by changing hair cycle phases and increasing certain cell contents.

Dihydrotestosterone (DHT) mainly affects nearby cells, doesn't significantly change prostate hormonal environment or cancer risk, and doesn't play a main role in causing hair loss or acne. More research is needed on its effects on heart health, sexual function, and bone health.

Blocking Rab27a slows hair growth, while blocking Rab27b encourages it.

The document explains how hair is studied in forensics to identify its source and its role in criminal investigations.