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Old people have less hair because their hair follicles don't regenerate as well, not because of fewer stem cells, and a protein called follistatin might help reactivate hair growth.

Most drugs fail to reach the market, but understanding their properties and using strategies like early toxicity tests and drug repurposing can help advance their development.

PCOS is a hormonal disorder causing symptoms like irregular periods and acne, and increases the risk of diabetes and heart disease.

Genetic defects and UV radiation cause skin damage and aging.

Environmental factors can cause mutations in skin proteins, leading to skin disorders.

PBX1 helps reduce aging and cell death in hair follicle stem cells by decreasing DNA damage, not by improving DNA repair.

Skin bacteria, specifically Streptococcus and Staphylococcus, help in hair regrowth after skin injury and speed up wound healing.

Skin aging is a complex process influenced by various factors, leading to wrinkles and sagging, and should be considered a disease due to its health impacts.

Understanding how different body systems interact can improve how we prevent or treat frailty in aging.

The environment around the time of conception can change the VTRNA2-1 gene in a way that lasts for years and may affect disease risk.

Hormonal male contraception is effective and could be market-ready, but more research is needed to ensure safety for all ethnic groups.

Human hair follicle stem cells can be turned into red blood cells.

Aging changes hair stem cells and their environment, leading to gray hair and hair thinning, but understanding these changes could help develop treatments for hair regeneration.

Stress in hair follicle stem cells causes inflammation in a chronic skin condition through a specific immune response pathway.

Gene therapy shows promise for healing chronic wounds but needs more research to overcome challenges.

Hair loss and aging are caused by the breakdown of a key protein in hair stem cells.

Cancer can hijack the body's cell repair system to promote tumor growth, and targeting this process may improve cancer treatments.

The Wnt/β-catenin pathway can activate melanocyte stem cells and may help regenerate hair follicles.

Nanotechnology improves hair care products by enhancing ingredient stability, targeting treatment, and reducing side effects, but more research on its toxicity is needed.

Certain genetic variations are linked to increased androgen levels in PCOS, but more research is needed to understand these connections fully.

Antiandrogens are the main treatment for hirsutism, with individualized care and safe, affordable options needed.

Some nutrients and antioxidants may improve skin and hair health, but more research is needed to confirm these benefits.

Telogen effluvium is a reversible hair loss condition that requires a detailed diagnosis and often resolves on its own.

Antiandrogens like flutamide are effective in treating conditions like prostate cancer and hair loss, but there's a need for more potent versions. Understanding their structure can help develop better treatments.

The circadian clock is crucial for tissue renewal and regeneration, affecting stem cell functions and having implications for health and disease.

Antioxidants can benefit skin health but should be used carefully to avoid negative effects.

Effective management of children's hair loss involves accurate diagnosis, various treatments, and supportive care.

New treatments for PCOS show promise, but no current medication treats all aspects of the condition.

Obesity worsens Polycystic Ovary Syndrome symptoms, and weight loss is a key treatment.

Finasteride treats enlarged prostate and baldness, but may cause limited urinary improvement and sex-related side effects.