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Methotrexate side effects vary by race and sex.

HIV-infected men who have sex with men are at higher risk for aggressive syphilis, but treatment and tests are effective.

Hair loss causes differ between men and women due to changes in hormone levels and inflammation-related pathways.

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

Sulforaphane from broccoli may help treat certain cancers, hormone issues, and hair loss.

More research is needed to understand sex and racial differences in long COVID.

The conclusion is that recognizing the difference between gender identity and biological sex is crucial in dermatology to improve patient care and research accuracy.

A rare ovarian tumor caused high testosterone and excess hair in a woman, which was resolved after tumor removal.

Androgens increase norepinephrine release, promoting smooth muscle growth in male sex organs, which may contribute to benign prostatic hypertrophy.

Measuring reproductive hormones in brown bear hair could help identify their sex and reproductive state, but better collection methods or lab techniques are needed.

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

Breathing in newborn rats is affected differently by hormones based on their sex.

Tranexamic acid reduces skin aging more in female mice.

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

Cancer rates are increasing in developed countries, with estrogen, aging, low vitamin D3, and HPV infection as common causes.

Common baldness, also known as Androgenetic Alopecia, is caused by a combination of genetic factors and hormones called androgens.

Men with coeliac disease may have hormone imbalances that could affect sexual function, but these can improve with better gut health.

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

Lentiginous melanoma is most common on the face, especially the nose, cheek, and pre-auricular areas, with men more likely to have it on the scalp, ears, upper back, and trapezius, and women on the cheek and anterior arm. Sun damage is a key factor in its formation.

Beards and long hair may affect how attractive someone is to the opposite sex.

Sardinians were historically short due to a mix of genetics and factors like disease and poor nutrition, but recent height increases suggest better living conditions had a bigger impact.

Testosterone changes how certain channels work in male rat reproductive tracts, affecting fertility-related fluid balance.

Dehydroepiandrosterone (DHEA) is a prohormone important for producing sex steroids and has potential health benefits.

The document concludes that blocking the internal pathways that create androgens might help treat cancers that depend on sex hormones.

Sex and stress steroids quickly change brain cell structures in the hippocampus.

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

The cause of atypical Cushing's syndrome in dogs, possibly linked to sex hormones, is not yet proven.

Lipocalin-Type Prostaglandin D2 Synthase (L-PGDS) is a protein that plays many roles in the body, including sleep regulation, pain management, food intake, and protection against harmful substances. It also affects fat metabolism, glucose intolerance, cell maturation, and is involved in various diseases like diabetes, cancer, and arthritis. It can influence sex organ development and embryonic cell differentiation, and its levels can be used as a diagnostic marker for certain conditions.

Sex hormones may influence COVID-19 severity, with males at higher risk, and certain hormone therapies could potentially treat the virus.

Age affects how certain proteins involved in COVID-19 infection are expressed in mice, but sex hormones and heart injury do not.