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

Telogen effluvium is a reversible hair loss condition that requires a detailed diagnosis and often resolves on its own.

MK-0773 safely increased muscle mass but did not improve muscle strength or function in elderly women with sarcopenia.

Artificial skin development has challenges, but new materials and understanding cell behavior could improve tissue repair. Also, certain growth factors and hydrogel technology show promise for advanced skin replacement therapies.

Alopecia areata is likely an autoimmune disease with unclear triggers, involving various immune cells and molecules, and currently has no cure.

The PDGF/PDGFR pathway is a potential drug target with mixed success in treating various diseases, including some cancers and fibrosis.

Jumonji genes are important for development and their mutations can cause abnormalities, especially in the heart and brain.

Fibromodulin might help reduce scarring if increased in adult wounds like in fetal skin that heals without scars.

Stem cell niches support, regulate, and coordinate stem cell functions.

Blood vessels and specific genes help turn cartilage into bone when bones heal.

Early development of hair, teeth, and glands involves specific signaling pathways and cellular interactions.

Tributyltin exposure causes sex changes, sterilization, and decline in the snail Ocinebrina aciculata, risking its extinction.

Keratinocytes help heal skin wounds by interacting with immune cells and producing substances that kill pathogens.

GABRA2 gene variations impact alcohol response, and hair loss medication finasteride reduces some effects.

Asia has made significant progress in tissue engineering and regenerative medicine, but wider clinical use requires more development.

Modern lifestyles, including poor diet, stress, and long-term use of certain medications, hinder the body's ability to heal from inflammation, leading to chronic diseases.

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

Androgens have complex effects on hair growth, promoting it in some areas but causing hair loss in others, and our understanding of this is still evolving.

Children, especially teenagers, can get severe SARS-CoV infection with symptoms similar to adults, but they typically recover well with supportive care.

Hair, teeth, and mammary glands develop similarly at first but use different genes later.

High-dose dutasteride reduces PMDD symptoms by stabilizing neurosteroid levels.

Fetal wound healing changes with development, affecting inflammation and collagen, which may influence scarring.

Skin surface lipids are important for skin health and altering them could help prevent aging and treat skin conditions.

Laminin-511 is crucial for early hair growth and maintaining important hair development signals.

Finasteride may cause slight depression and anxiety.

Testosterone replacement may help some postmenopausal women with symptoms like fatigue and low libido, but more research is needed to fully understand its effects.

Minoxidil effectively treats severe hypertension but may cause side effects, so careful monitoring is needed.

Treatments for permanent hair loss from scarring aim to stop further loss, not regrow hair, and vary by condition, with partial success common.

Androgens block hair growth by disrupting cell signals; targeting GSK-3 may help treat hair loss.

Sensitive skin is often caused by nerve fibers and environmental factors, and can be managed with mild skincare and professional advice.