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Skin fat has important roles in hair growth, skin repair, immune defense, and aging, and could be targeted for skin and hair treatments.

Obese women with PCOS show a male-like pattern in certain fat tissue gene expressions.

Weight loss and metformin don't significantly change vaspin levels in women with PCOS.

Stress and alcohol affect brain chemicals differently in rats, mice, and humans, influenced by genetic differences.

Hair loss in women may have multiple causes, and eyebrow regrowth possible with specific injections.

Women with PCOS often have skin problems like excessive hair, acne, hair loss, and dark patches, which can be treated with hormonal and non-hormonal therapies.

The document concludes that treatments for female hair loss and excessive hair growth are temporary and not well-studied.

New research suggests that skin cell renewal may not require a special type of cell previously thought to be essential.

Pregnancy can cause skin darkening, varicose veins, more sweating, hair growth, hair loss after birth, nail changes, and gum inflammation.

The guide explains how to study human and mouse sebaceous glands using various staining and imaging techniques, and emphasizes the need for standardized assessment methods.

Natural 5α-reduced glucocorticoids might be anti-inflammatory with fewer side effects than current options.

Pregnancy can cause specific skin conditions that need correct diagnosis and treatment to protect both mother and baby.

The document concludes that lifestyle changes and medical treatments can significantly reduce symptoms of Hidradenitis Suppurativa, a chronic skin condition.

Testosterone conversion to 5α-DHT may not be essential for its effects on the skin.

Obesity worsens skin health and losing weight can improve skin conditions.

Hidradenitis Suppurativa is likely an autoinflammatory disease, and better understanding its causes could improve treatments.

Managing metabolic syndrome needs both lifestyle changes and medical treatments.

Androgens can both increase and decrease hair growth in different parts of the body.

Androgens may cause hair loss by increasing TGF-beta1 from scalp cells, which inhibits hair cell growth.

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

The niche environment controls stem cell behavior and plasticity, which is important for tissue health and repair.

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.

Stress can stop hair growth in mice, and treatments can reverse this effect.

Normal skin cell renewal doesn't need RAR signaling, but vitamin A-related skin thickening does.

Hair follicles produce and respond to melatonin, affecting hair growth and sensitivity to estrogen.

The telogen phase of hair growth is active and important for preparing hair follicles for regeneration, not just a resting stage.

Vitamin D has potential benefits for cancer prevention, heart health, diabetes, obesity, muscle function, skin health, and immune function, but clinical results are mixed and more research is needed.

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.

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

No treatment fully prevents hair loss from chemotherapy yet.