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The document concludes that the fast-growing direct-to-consumer genetic testing market lacks sufficient regulation, posing risks to consumers due to questionable test quality and accuracy.

Ectodin integrates BMP, SHH, and FGF signals in developing ectodermal organs.

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

Melanocyte stem cells in hair follicles are key for hair color and could help treat greying and pigment disorders.

Fat cells help recruit healing cells and build skin structure during wound healing.

A protein from certain immune cells is key for new hair growth after skin injury in mice.

Future hair loss treatments should aim to extend hair growth, reactivate resting follicles, reverse shrinkage, and possibly create new follicles, with gene therapy showing promise.

Msx and Dlx genes are crucial for development, controlling cell behaviors like growth and differentiation through their roles as gene regulators.

Chitin and chitosan are useful in cosmetics for oral care, haircare, and skincare, including UV protection and strength improvement.

Creating stronger blockers for skin enzymes might lead to better treatment for conditions like acne and excessive hair growth.

Stem cells are crucial for skin repair and new treatments for chronic wounds.

Nerves are crucial for the regeneration of various body parts in many animals.

Androgen deprivation therapy for prostate cancer can cause sexual, physical, and psychological side effects, and doctors should manage these carefully.

Cells from balding scalps have more androgen receptors than cells from non-balding scalps.

Two main types of fibroblasts with unique functions and additional subtypes were identified in human skin.

The document concludes that understanding hair follicle biology can lead to better hair loss treatments.

Some patients taking finasteride or dutasteride may have ongoing sexual problems and depression even after stopping the medication.

Tofacitinib is safe and effective for severe alopecia areata, but hair loss may return 2 months after stopping treatment.

Adding anti-Müllerian hormone to PCOS criteria lowers the number of women diagnosed.

Melatonin may help with sleep issues, depression, and cancer, but more research is needed.

Mice lacking the PPARγ gene in their fat cells had almost no fat tissue, severe metabolic problems, and abnormal development of other fat-related tissues.

Chemotherapy causes hair loss by damaging hair follicles and stem cells, with more research needed for prevention and treatment.

The document concludes that the 5 alpha-reductase enzymes are important in steroid metabolism and related to various human diseases, with inhibitors used to treat conditions like male pattern baldness and prostate issues.

Tiny pollution particles called PM2.5 can harm skin cells by causing stress, damage to cell parts, and cell death.

About 7% to 15% of Iranian women have polycystic ovary syndrome, depending on the criteria used to diagnose it.

The guidelines suggest a detailed approach to diagnosing and treating lupus, with a focus on regular check-ups, personalized medicine, and a range of drug options for different cases.

The document provides a method to classify human hair growth stages using a model with human scalp on mice, aiming to standardize hair research.

Planarian regeneration begins with a specific gene activation caused by injury, essential for healing and tissue regrowth.

Different types of skin cells play specific roles in development, healing, and cancer.

More dermal papilla cells in hair follicles lead to larger, healthier hair, while fewer cells cause hair thinning and loss.