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Pig hair cortisol levels are inheritable and linked to stress responses, which could help select for more resilient pigs.

Testosterone levels influence male behaviors and physical traits, but this relationship is complex and influenced by both internal and external factors.

Women with and without PCOS show no significant differences in psychopathic traits.

Androgens in female meerkats influence aggression and dominance, affecting social dynamics and offspring behavior.

Testosterone is important for male sexual traits, reproduction, muscle and bone health, blood production, and metabolism, and works both directly and after being changed into other hormones.

The research found a way to identify and study skin cells with stem cell traits, revealing they behave differently in culture and questioning current stemness assessment methods.

The 25Up study collected extensive data on mental disorders and related factors in Australian twins and siblings to investigate the genetics of psychiatric illnesses.

Testosterone significantly affects sexual desire in both men and women, but its impact on women is more complex and influenced by psychological factors.

Male cats have higher stress levels than females.

Some patients may experience lasting sexual dysfunction, depression, and other side effects from 5α-reductase inhibitor therapy.

Different human traits like skin color and hair type vary between populations due to genetic adaptations to the environment.

Testosterone increases sexual behavior in female capuchin monkeys.

Finasteride use can cause depression-like behavior in male rats.

The Naked (N) trait in mice is linked to lower glycine and tyrosine in hair proteins.

Finasteride raises suicide-linked aggression and stops clozapine's positive effects in schizophrenia animals.

Cocaine impairs male sexual behavior and alters testosterone metabolism in the brain.

miR-22 helps skin cancer grow and spread by activating specific cell signals.

Hair stem cell regeneration is controlled by signals that can explain different hair growth patterns and baldness.

Stem cells are more dynamic and adaptable than previously believed.

Changing allopregnanolone levels in baby rats affects their adult behavior and alcohol use.

Lipid peroxidation may worsen social behavior issues in autism.

Using cans with beans improves Rex rabbits' growth, meat quality, and hair follicle density.

Anorexia nervosa causes serious health issues, best treated with a team approach focusing on nutrition.

Mice lacking steroid 5α-reductase 2 show less aggression and better impulse control.

Finasteride treatment in male rats causes long-lasting effects on depression-like behavior, brain cell growth, inflammation, and gut bacteria composition.

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

University students in Egypt experienced high stress during COVID-19's third wave, with negative coping mechanisms being more common.

Higher anxiety symptoms and social behavior affect stress levels in hair.

Masculine facial features may not reliably indicate heritable health, and more research is needed.

Congenital triangular alopecia is a harmless, non-spreading hair loss condition often seen in young children.