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Hair follicle stem cells are key for hair and skin regeneration, can be reprogrammed, and have potential therapeutic uses, but also carry a risk of cancer.

TGF-β is crucial for controlling stem cell behavior and changes in its signaling can lead to diseases like cancer.

Keratinocytes help heal skin wounds by interacting with immune cells and producing substances that kill pathogens.

Young adults have about 230,000 tactile nerve fibers, decreasing 5-8% per decade with age.

The document concludes that adenosine receptor agonists have potential for treating various conditions, but only a few are approved due to challenges like side effects and the need for selective activation.

Eating less sugar, milk, and saturated fats and more vegetables and fish may help treat and prevent acne.

Fat cells in the skin help start healing and form important repair cells after injury.

Modern lifestyles, including poor diet, stress, and long-term use of certain medications, hinder the body's ability to heal from inflammation, leading to chronic diseases.

The hydrogel with a 1:3 ratio of hydroxyethyl cellulose to hyaluronic acid is effective for delivering drugs through the skin to treat acne.

Stress increases a factor in mice that leads to hair loss, and blocking this factor may prevent it.

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

The p75 neurotrophin receptor is important for hair follicle regression by controlling cell death.

Lichen planus pigmentosus causes dark skin patches and is treated by avoiding triggers and using anti-inflammatory medications.

Sensitive skin is often caused by nerve fibers and environmental factors, and can be managed with mild skincare and professional advice.

Low-level laser therapy might help hair growth, but more research is needed.

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.

Platelet-rich plasma might help tissue regeneration in dentistry, but results vary and more research is needed.

Sponge helps heal wounds faster with less inflammation and better skin/hair growth.

A three-month treatment with a GnRH agonist significantly lowered androgen levels and 5α-reductase activity in men with benign prostatic hyperplasia.

Skin has specialized touch receptors that can tell different sensations apart.

Correcting nutrient deficiencies may help with hair loss, but the benefits of supplements without a deficiency are uncertain and could be harmful.

The 308-nm Excimer laser is effective and safe for treating patchy alopecia areata in children.

Blocking the virus's entry into cells by targeting certain pathways could lead to early COVID-19 treatments.

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

Beta-sitosterol has potential health benefits but needs more research to fully understand its effects and improve its use in treatments.

Maintaining DNA health in stem cells is key to preventing aging and tissue breakdown.

Different scaffold patterns improve wound healing and immune response in mouse skin, with aligned patterns being particularly effective.

Brain-Derived Neurotrophic Factor (BDNF) slows down hair growth and promotes hair follicle regression.

The conclusion is that individual differences in COVID-19 severity are influenced by factors like age, sex, race, and genetics, which are important for personalized medicine.

Products should be called 'sperm-safe' only after thorough, well-designed tests.