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Deleting the Hoxc13 gene in frogs shows its crucial role in developing skin structures similar to hair.

The conclusion suggests that PCOS may persist due to genetic traits that, while harmful for female fertility, could have provided survival and reproductive benefits to males.

Men using steroids or finasteride to look more attractive may harm their fertility and sexual function, creating a paradox where they seem fit but may be less able to reproduce.

Human hair loss may have evolved to help increase brain size.

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

Keratin-associated proteins have ancient origins and were used for different purposes before being adapted for hair in mammals.

Reptilian scales, feathers, and hairs evolved from changes in skin cell interactions.

Understanding where cancer cells come from helps create better prevention and treatment methods.

Humans lost body hair relatively recently in evolution.

KAP genes are crucial for hair development and show both shared and unique traits in humans, chimpanzees, and baboons.

The document concludes that PCOS is a complex disorder caused by both genetic and environmental factors, affecting women's health in various ways, and requires personalized treatment.

Vitamin D is essential for bone health and may reduce risks of several diseases.

Skin fat helps with body temperature control and has other active roles in health.

Cat claws stay sharp by shedding their outer layer through microcracks formed during activities.

Hormones, nutrition, and seasonal changes regulate hair growth cycles, with androgens extending growth phases and factors like aging and malnutrition affecting hair loss and thinning.

Researchers found a new gene variant linked to a rare bone disease, which doesn't always cause symptoms in carriers.

The spiny mouse can regenerate its skin without scarring, which could help us learn how to heal human skin better.

Baldness does not affect vitamin D levels in men.

Hair color is determined by different melanins and changes with age.

Short telomeres contribute to aging and cancer, and while telomerase can delay aging, it may also promote cancer.

Cells from certain embryo parts can induce head formation in another embryo, involving complex signaling pathways.

Transglutaminase activity is important for skin and is found in both mammals and birds.

Scientists found 53 keratin genes in yaks that are important for hair growth and share similarities with those in other animals.

Certain immune cells are more common on the top of the head and might help predict or treat common hair loss.

Male pattern baldness might have evolved to help protect against prostate cancer by increasing UV radiation on the scalp.

The research identified two types of keratinocytes in chicken scales: one for hard scales and another for soft skin, with similarities to human skin differentiation.

The editor suggests removing "race" and "ethnicity" from dermatology and creating tools to objectively assess skin color and hair texture.

RD26 controls root hair growth during drought by repressing key genes, helping plants save energy.

Redheaded people have higher levels of vitamin D precursor, suggesting their hair color may be an adaptation to low sunlight areas.

GATA6 is important for maintaining and differentiating cells in a key area of human skin.