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Male and female skin differ due to hormones, affecting conditions like hair loss, acne, and skin cancer, and suggesting a need for gender-specific treatments.

COVID-19 may affect male fertility and women might have better outcomes due to hormonal and immune differences.

Pattern baldness is likely caused by a dominant gene influenced by testosterone levels, making it more common in men.

The girl's unexpected pubic hair growth led to a diagnosis different from complete androgen insensitivity syndrome.

Androgens may influence T cells, contributing to higher autoimmune liver disease risk in women.

Many COVID-19 patients have long-term symptoms, especially women, but certain medications may help reduce these symptoms.

Pediatric endocrinologists should provide early fertility counseling and preservation options to young patients at risk of infertility.

Researchers found genes linked to feather growth speed in Shouguang chickens, highlighting two genes that might explain differences in feathering.

Mutations in the AR gene cause hair thinning and loss.

Barn owls with smaller black spots have higher testosterone levels, which might be due to genetic effects on hormone regulation rather than hormone effects on coloration.

A 20-year-old woman with a rare form of Turner syndrome showed improvement with hormonal therapy and needs comprehensive care.

The conclusion is that certain genetic factors and blood types may affect COVID-19 severity, but changes in ACE2 and TMPRSS2 genes are not clearly linked to it.

DA-9401 helps protect rat testis from finasteride damage.

Addressing underrepresentation in Parkinson's research is crucial for better treatments and understanding.

Air Vice-Marshal Sir Ralph Jackson significantly advanced dialysis technology in the UK.

The document concludes that the fast-growing direct-to-consumer genetic testing market lacks sufficient regulation, posing risks to consumers due to questionable test quality and accuracy.

Pregnancy can increase lupus activity, but careful planning and treatment can improve outcomes.

The document explains how the male reproductive system works, its role in making testosterone, and how conditions like obesity can disrupt it, leading to low testosterone and fertility issues.

The review recommends hormone replacement therapy for women with premature ovarian insufficiency to manage symptoms and protect health, with specific approaches for different groups.

Finasteride may cause sexual side effects like erectile dysfunction, but they are reversible and affect less than 2% of men.

The document concludes that identifying the cause of amenorrhea is crucial for proper treatment.

Amenorrhea is when a woman doesn't have periods, with primary amenorrhea starting by age 15 or within five years of breast development, and secondary amenorrhea when periods stop for three months. It affects 3-4% of women not pregnant, breastfeeding, or in menopause, mainly due to polycystic ovary syndrome, hypothalamic amenorrhea, hyperprolactinemia, and ovarian failure.

Amenorrhea, or the absence of periods, should be evaluated by age 15 or within five years of early breast development, and is most commonly caused by conditions like polycystic ovary syndrome and hypothalamic amenorrhea.

COVID-19 may harm male fertility and damage the reproductive system.

Childhood ptosis can vary from a minor cosmetic issue to a serious condition and may signal other health problems.

Fetal-maternal stem cells in a mother's hair can help with tissue repair and regeneration long after childbirth.

Finasteride causes harmful organ changes in female mice.

Ovulation disorders are a major cause of infertility and menstrual problems in women.

Father's finasteride use may affect son's fertility and testicular function.

Finasteride may improve sperm count in subfertile men with low sperm count.