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Different ectodermal organs like hair and feathers regenerate differently, with specific stem cells and signals involved in their growth and response to the environment.

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

Cellular flows and tissue mechanics guide feather follicle formation in birds.

Feathers are crucial for understanding bird evolution, development, and have inspired biomimetic research.

The modified Ferriman-Gallwey method is a useful tool for diagnosing hirsutism.

Women with the NIH type of PCOS have more obesity and higher risk of diabetes and heart disease than those with other types of PCOS.

High levels of male hormones, insulin resistance, and obesity are closely linked and worsen polycystic ovary syndrome, but more research is needed to improve treatments.

Women with PCOS are more likely to have impaired glucose tolerance and type 2 diabetes, especially if they are Asian or obese.

Oestrogens are key for bone growth during puberty in both boys and girls.

About 2.2% of women with symptoms of high male hormones have a mild form of congenital adrenal hyperplasia, and measuring a specific hormone level can accurately diagnose it.

Laser hair removal effectiveness depends on targeting hair structures without harming the skin, and improvements require more research and expert collaboration.

Feather patterns in birds are shaped by signaling interactions and cell movements, with EDA/EDAR crucial for pattern formation.

The conclusion is that PCOS is caused by ovarian sensitivity to hormones and disrupted hormone control, possibly due to ovarian factors, and more research is needed.

The update highlights that non-classic congenital adrenal hyperplasia is common in women with excess male hormones, requires specific hormone tests for diagnosis, and has various treatment options depending on age and symptoms.

The research identified various cell types in mouse and human teeth, which could help in developing dental regenerative treatments.

New hormonal contraceptives are safer, have fewer side effects, and offer health benefits for women.

Women with PCOS may take longer to get pregnant but can have a normal family size, and should manage their overall health to reduce long-term health risks.

SHISA6 helps maintain certain stem cells in mouse testes by blocking signals that would otherwise cause them to differentiate.

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.

Low-dose gonadotropin treatment is effective for infertility in women with PCOS, leading to high ovulation rates and comparable pregnancy rates with fewer complications.

Engineered exosomes show promise for improving wound healing but face challenges in clinical use.

Lifestyle changes improve metabolism and fertility in overweight PCOS patients; anti-obesity drugs show potential but need more research.

Epidermal stem cells could lead to new treatments for skin and hair disorders.

The current methods for diagnosing polycystic ovary syndrome are too vague and may lead to misdiagnosis and problems in research.

Products should be called 'sperm-safe' only after thorough, well-designed tests.

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

Hormone therapy for excessive hair growth is as good with GnRHa as with high-dose CPA, but GnRHa has longer-lasting results.

The document suggests that clinical trials for PCOS should focus on meaningful primary outcomes like live birth rates, rather than less reliable surrogate markers.

Shorter CAG repeats in a specific gene may increase male hormone activity and symptoms like acne and excess hair in women with PCOS.

New treatments for PCOS focus on insulin resistance and reducing testosterone levels, along with traditional hormone therapies.