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Male rats have more somatostatin neurons than females due to testosterone converting to estrogen during early development.

Estrogen and its receptors play a key role in hair growth, with differences between males and females.

Sex neurosteroids cause different effects on hippocampal synaptic plasticity in males and females.

Reduced neurosteroids and growth issues can harm fetal brain development, especially in males.

Sex hormones, especially estradiol, can change chicken feather shapes and colors.

Higher androgen levels and site-specific AR expression cause sex-related skeletal differences, and certain steroids can boost AR expression and androgen effects in bone cells.

Female cuckoo color differences are linked to their unique genes and help avoid male harassment.

Children's hair grows in different types from before birth through puberty, with growth rates and characteristics varying by age, sex, and race.

Early hormones shape sex-specific differences in rat glands.

Hair growth is influenced by factors like genetics and nutrition, and more research is needed to understand hair loss and growth mechanisms.

Gender differences affect allergy prevalence, severity, and response to environmental toxins, with women often more affected than men.

Estrogens significantly influence hair growth by interacting with receptors in hair follicles and may help regulate the hair growth cycle.

Estrogens generally inhibit hair growth and improve skin quality, but their exact effects on hair follicles are complex and not fully understood.

Androgens like testosterone make Staphylococcus aureus skin infections more common in men.

Male and female bodies respond differently to stress, influenced by hormones and development stages, with implications for stress-related diseases.

Men and women experience skin aging differently due to changes in sex hormone levels with age.

Male hormones like testosterone may make COVID-19 worse, and testing for sensitivity to these hormones could help predict how severe a patient's symptoms might be. Treatments that reduce these hormones are being explored.

Men, especially older ones with health issues like prostate cancer, may have worse COVID-19 outcomes and could benefit from therapies targeting male hormones.

Finasteride reduces alcohol withdrawal severity in male mice but increases it in female mice.

Men generally have more severe COVID-19 cases and higher death rates than women due to biological differences.

Men are more likely to have severe COVID-19 cases and fatalities than women due to factors like lifestyle, aging, and biological differences.

Diagnosing sex development disorders requires combining medical history, physical exams, imaging, lab tests, and genetic data.

The document concludes that there are still unknowns about the effectiveness, risks, and detection of performance-enhancing drugs, and doping remains a challenge.

Finasteride reduces alcohol withdrawal effects, especially in female mice.

Finasteride metabolism varies by age, sex, and P450 inducers, with males processing it faster.

Prenatal stress changes how male and female rats enjoy rewards differently, linked to sex hormones.

Sex hormones affect hair and feather growth and may help manage alopecia and hormone-dependent cancers.

Hirsutism is more linked to high androgen levels than acne or hair loss, and a mix of hormonal tests is best for diagnosis; certain treatments can reduce symptoms.

The document concludes that there is a significant lack of reporting on the sex and age of cells in skin research, which could affect clinical trials and treatments.