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Stress stops hair growth in mice by causing early hair growth phase end and harmful inflammation through a specific nerve-related pathway.

Skin cells produce and activate vitamin D, which regulates skin functions and supports hair growth.

Special fiber materials boost the healing properties of certain stem cells.

Epidermal stem cells are diverse and vary in activity, playing key roles in skin maintenance and repair.

Stress-related substance P may lead to hair loss and negatively affect hair growth.

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

Vitamin D is important for skin health and may affect conditions like psoriasis and hair loss, but more research is needed to understand its role fully.

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

Stem cell therapy, particularly using certain types of cells, shows promise for treating hair loss by stimulating hair growth and development, but more extensive trials are needed to confirm these findings.

The conclusion is that Treg-targeted therapies have potential, but more knowledge of Treg biology is needed for effective treatments, including for cancer.

Men generally have more severe COVID-19 cases and higher death rates than women due to biological differences.

Cepharanthine is a well-tolerated drug with multiple medical uses, including anti-inflammatory and anti-cancer properties.

The document concludes that while significant progress has been made in understanding skin biology and stem cells, more research is needed to fully understand their interactions with their environment.

The update highlights that non-classic congenital adrenal hyperplasia is common in women with excess male hormones, requires specific hormone tests for diagnosis, and has various treatment options depending on age and symptoms.

Adult female acne treatment should be personalized, considering individual preferences and pregnancy, using various topical and oral medications while managing side effects and resistance.

Hair loss occurs due to fewer papillary cells, smaller follicles, and shorter growth phases.

Smoking harms the skin, causing early aging and increasing cancer risk, but stopping smoking can improve skin health.

Melatonin helps regulate hair growth and protects the hair follicle from stress.

New single-cell analysis techniques are improving our understanding of stem cells and could help in treating diseases.

Formyl-peptide receptor agonists could be new anti-inflammatory drugs.

Thymosin β4 promotes hair growth by activating stem cells in hair follicles.

Notch/CSL signaling controls hair follicle differentiation through Wnt5a and FoxN1.

The document concludes that accurate diagnosis of different types of hair loss requires careful examination of hair and scalp tissue, considering both clinical and microscopic features.

Human beard hair medulla contains a unique and complex mix of keratins not found in other human tissues.

Sericin hydrogels heal skin wounds well, regrowing hair and glands with less scarring.

Hair follicle regeneration needs special conditions and young cells.

Animal models have helped understand hair loss from alopecia areata and find new treatments.

Activin helps skin growth and healing mainly through stromal cells and affects keratinocytes based on its amount.

Created material boosts hair growth and kills bacteria for wound healing.

Platelet-rich plasma may help in skin and hair treatments, and with muscle and joint healing, but more research is needed to fully understand its benefits and limitations.