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Stem cell self-renewal is complex and needs more research for full understanding.

Women with PCOS have overall higher body fat, not abnormal fat placement, and more insulin resistance.

Some drugs can cause hair loss or increase hair growth, but these effects are usually reversible when the drug is stopped.

The Sonic hedgehog pathway is crucial for new hair growth during mouse skin healing.

Lupus affects the body and skin, causing joint pain and skin issues that can be treated with steroids and antimalarial drugs.

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

Postpartum depression is linked to changes in brain chemicals, inflammation, stress, and certain genes, and can potentially be identified by markers like specific steroids, serotonin levels, and vitamin D levels.

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

Liposomes improve drug delivery and reduce skin irritation in dermatology.

Male hormones affect COVID-19 severity and certain drugs targeting these hormones could help reduce the risk.

Tofacitinib helped regrow hair in most adolescents with alopecia areata, but more research is needed.

Protoporphyrin IX is useful in cancer treatment but can cause health problems if not properly regulated.

Horizontally sectioned scalp biopsies are more reliable for diagnosing hair loss in women when three samples are taken instead of one.

Fat-derived stem cells show promise for skin repair and reducing aging signs but need more research for consistent results.

In Italian patients with lupus, the most common skin issue was chronic cutaneous lupus, especially discoid lesions, and nonspecific skin problems occurred in about a third of those with systemic lupus, mainly during active disease.

Microneedles help improve skin appearance and deliver skin treatments effectively, but safety concerns need more research and regulation.

The document concludes that specific cells are essential for hair growth and more research is needed to understand how to maintain their hair-inducing properties.

Modulating BMP activity changes the number, size, shape, and type of ectodermal organs.

Human hair follicle organ culture is a useful model for hair research with potential for studying hair biology and testing treatments.

Obesity worsens PCOS symptoms, and PCOS may lead to more weight gain; managing both requires a holistic approach that includes mental health.

Different types of stem cells exist within individual skin layers, and they can adapt to damage, transplantation, or tumor growth. These cells are regulated by their environment and genetic factors. Tumor growth is driven by expanding, genetically altered cells, not long-lived mutant stem cells. There's evidence of cancer stem cells in skin tumors. Other cells, bacteria, and genetic factors help maintain balance and contribute to disease progression. A method for growing mini organs from single cells has been developed.

Over one-third of women experience hair loss, with female-pattern hair loss being most common, and treatments include minoxidil and possibly hair transplantation.

Damage to skin releases dsRNA, which activates TLR3 and helps in skin and hair follicle regeneration.

Minoxidil shortens baldness from chemotherapy by 50.2 days without significant side effects.

The document concludes that understanding hair structure is key to diagnosing hair abnormalities and recommends gentle hair care for management.

Stem cell plasticity is crucial for wound healing but can also contribute to cancer development.

Hibiscus plant extracts may have health benefits like lowering blood pressure and protecting the heart.

Women with PCOS and higher androgen levels are more likely to have fatty liver disease.

Alopecia is a key indicator of thallium poisoning.

TSH is usually the only test needed to check thyroid function in primary care.