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The study suggests that being overweight or obese, not PCOS itself, is strongly linked to insulin resistance.

Steroidogenic isoenzymes may help improve treatments for common hair loss.

Intermediate hair follicles are a better model for studying hair growth and testing hair loss treatments.

Small changes in hormones can significantly impact health, showing the importance of sensitive testing for chemicals that disrupt hormones.

Hair disorders are caused by a complex mix of biology, genetics, hormones, and environmental factors, affecting hair growth and leading to conditions like alopecia.

The document concludes that understanding the anatomical changes of the ageing face is important for effective rejuvenation treatments.

Most hair loss can be diagnosed with patient history and physical exam, and a few common types make up most cases.

Women generally handle heart enlargement better than men, but it's riskier for them if it occurs; hormones like estrogen offer some protection.

Daughters of women with PCOS generally experience normal puberty but may have more body hair and different body fat distribution.

The document concludes that primary scarring alopecias cause permanent hair loss, have unpredictable outcomes, and lack definitive treatments, requiring personalized care.

Scalp hair grows at 0.37 mm/day, forearm hair at 0.18 mm/day, and thigh hair at 0.30 mm/day, with no significant differences found in people with certain hair conditions.

Nuclear Factor I-C is important for controlling hair growth by affecting the TGF-β1 pathway.

Loose Anagen Syndrome causes easy-to-pull, thin hair, mainly in young girls, and improves with age.

Alopecia areata involves immune response and gene changes affecting hair loss.

The review concludes that accurate diagnosis of different types of hair loss requires proper biopsy techniques and understanding the hair growth cycle and underlying causes.

Miniaturized hairs stay connected to muscle in alopecia areata, allowing possible regrowth, but not in androgenetic alopecia.

Androgens affect bone and fat cell development differently based on the cells' embryonic origin.

Laser hair removal works well for people with dark hair and light skin, but it's less effective for light hair or dark skin; improvements are expected.

Detailed patient history and physical exams are crucial for diagnosing hair loss.

Women with PCOS have higher 5α-reductase activity, which may be linked to insulin resistance.

Lower lipin 1β in belly fat is linked to insulin resistance in people with polycystic ovary syndrome.

The study found unique skin changes in a rare type of alopecia linked to a skin condition called linear morphea.

Alopecia causes smaller hair follicles and affects growth-related structures.

The superficial temporal artery flap is a reliable method for reconstructing complex facial defects with minimal complications.

Estrogen increases blood vessel growth factor production, while testosterone blocks this increase.

Male pattern baldness involves hormone-related hair thinning, shorter hair, and inflammation.

Hair from balding and non-balding areas regrows similarly on mice.

The cause of alopecia areata is likely a mix of genetics, immune system issues, and environmental factors, with more research needed to understand it fully.

Pigmented casts are common in several hair loss conditions and can help diagnose specific types of alopecia.

Men with more vanadium in their blood and who drink less soy milk are more likely to have hair loss.