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The levonorgestrel implant increases free testosterone and lowers SHBG more than DMPA-IM and the copper IUD.

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

Finasteride significantly reduces DHT levels in male dogs without affecting testosterone levels, suggesting it could be used to treat benign prostatic hypertrophy in dogs weighing 10 to 50 kilograms.

A 15-year-old girl has a skin condition causing blisters on her feet, likely inherited from her family.

Finasteride treats enlarged prostate, improves urinary flow, but may cause sexual side effects.

Younger transgender women have surgery earlier, are mostly attracted to men, and show more preoperative depression that improves after surgery compared to older transgender women.

Men are getting more beard transplants to look better and follow fashion trends.

Low-level laser therapy can stimulate hair growth more effectively than fake devices, but patient satisfaction is similar for both. Results should be taken with caution due to small study sizes and differences between studies. More research is needed.

The exact cause of growth hormone-responsive alopecia in dogs is unclear.

Finasteride for hair loss may cause persistent sexual symptoms, depression, anxiety, and lower quality of life.

Darker skin in 10-year-old girls may be an early sign of puberty.

A genetic region near the PAX1 gene is linked to a higher risk of scoliosis in females.

Transdermal testosterone can improve sexual desire in postmenopausal women but lacks long-term safety data and is not FDA-approved for this use.

The document concludes that while some organisms can regenerate body parts, mammals generally cannot, and cancer progression is complex, involving mutations rather than a strict stem cell hierarchy.

Testosterone and its byproducts help support male sexual behavior through different pathways in the brain and body.

Early signs of PCOS in girls, like irregular periods and polycystic ovaries, suggest a need for early diagnosis and intervention to prevent further health issues.

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

Women with nonclassic congenital adrenal hyperplasia experience more sexual dysfunction and distress.

Lack or blocking of SRD5a, a key component in hormone creation, can lead to conditions like pseudohermaphrodism and affect hair growth, bone mass, muscle strength, and reproductive health. More research is needed on its regulation from fertilization to adulthood.

Sex hormones like estrogen and testosterone may affect COVID-19 severity differently in men and women, potentially influencing prevention and treatment strategies.

The document concludes that for hair and feather growth, it's better to target the environment around stem cells than the cells themselves.

Combined oral contraceptives improve skin, hormone levels, and quality of life in women with PCOS.

The index to ring finger ratio may indicate disease severity in female ankylosing spondylitis patients, but not in males.

DNA phenotyping helps predict physical traits from DNA with varying accuracy and requires careful ethical and legal handling.

The document concludes that early diagnosis and a comprehensive treatment plan are crucial for managing hair loss in children, with a focus on both medical and psychological support.

Hormone therapy for breast cancer often leads to sexual issues like vaginal dryness and decreased libido.

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

5 alpha-reductase inhibitors can slightly improve symptoms of enlarged prostate but have a high risk of sexual side effects.

Hormone therapy for transgender females increases the risk of blood clots and requires careful dosing, monitoring, and lifelong management.

Men with lower 2nd to 4th finger ratios tend to have larger sinus volumes.