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Estrogen therapy can reduce skin aging but has cancer risks.

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

Low doses of some substances can be beneficial, while high doses can be harmful or toxic.

The conclusion is that the increasing use of drugs for lifestyle reasons is a complex issue influenced by corporate profit, consumer behavior, and the medicalization of everyday life, with potential negative effects on personal well-being.

The document concludes that understanding the sebaceous gland's development and function is key to addressing related skin diseases and aging effects.

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

Skin can be cooled quickly and safely during laser treatments to protect it without affecting deeper layers.

Mammals might fail to regenerate not because they lack the right cells, but because of how cells respond to their surroundings, and changing this environment could enhance regeneration.

The document concludes that the skin's immune system is complex, involving interactions with hair follicles, nerves, and microbes, and can protect or cause disease, offering targets for new treatments.

miR-22, a type of microRNA, controls hair growth and its overproduction can cause hair loss, while its absence can speed up hair growth.

Hair diversity is influenced by complex genetics and environmental factors, requiring more research for practical solutions.

Advancements in creating skin grafts with biomaterials and stem cells are promising, but more research is needed for clinical application.

Live imaging has advanced our understanding of stem cell behavior and raised new research questions.

Exposure to Corexit dispersants during the oil spill cleanup was linked to increased respiratory and eye irritation symptoms in workers.

Recent genetic insights show that low-renin hypertension includes a range from essential hypertension to secondary or familial forms, affecting diagnosis and treatment.

Wounds heal without scarring in early development but later result in scars, and studying Wnt signaling could help control scarring.

Menopausal women have higher androgen levels, which can cause symptoms like facial hair growth and low sexual desire.

Infertile men are more likely to produce sperm with abnormal chromosome numbers, which can affect pregnancy success and embryo health.

Blocking the FGF5 gene in sheep leads to more fine wool and active hair follicles due to changes in certain cell signaling pathways.

A mix of 5-aminolevulinic acid and iron ion can speed up hair growth.

Immune cells around hair follicles help control hair growth and could be targets for treating hair disorders.

Diagnosing hyperandrogenism in women is complex and requires accurate testing methods and consideration of SHBG levels.

Early hair whitening may indicate a higher risk of heart disease in young and middle-aged men.

OCT binds strongly to hair sheath cells and may affect skin and hair growth with fewer side effects than vitamin D3.

New patents show progress in developing drugs targeting the Wnt pathway for diseases like cancer and hair loss.

Fat tissue extract may help treat vitiligo by reducing cell stress and promoting skin repair.

Vitamin D made by the skin plays a role in immune defense and skin health, and more research is needed to understand its full effects.

Rabies virus was found in specific skin cells of rabid dogs' muzzles, suggesting these cells could help diagnose rabies.

People with first-time vitiligo have lower levels of a certain brain protein compared to healthy individuals.

Male pattern baldness may be caused by factors like poor blood circulation, scalp tension, stress, and hormonal imbalances, but the exact causes are still unclear.