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The circadian clock influences the behavior and regeneration of stem cells in the body.

Hair grays due to oxidative stress and fewer functioning melanocytes.

Long-term testosterone therapy can cause hormone suppression, affect prostate and heart health, and alter physical characteristics, but does not increase prostate cancer risk and needs more research for full risk assessment.

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.

Some hair loss can be treated, especially in women due to nutrition, but some types remain untreatable.

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

Plant extracts effectively reduce hair loss and increase growth, offering a safe alternative treatment.

SHBG may be a useful early indicator and treatment target for PCOS.

Lifestyle changes and weight loss are key for treating PCOS-related metabolic issues and infertility, with various medications available for specific symptoms.

Cancer treatments often cause hair disorders, significantly affecting patients' quality of life, and better management methods are needed.

Researchers developed a method to detect hormone-blocking drugs in wastewater and found them in Beijing's sewage, suggesting they can survive sewage treatment.

The document concludes that future heart disease research should account for sex-specific differences to improve diagnosis, treatment, and outcomes.

Panax ginseng is generally safe with mild side effects and may have health benefits, but more research is needed.

Male genital development is driven by androgen signaling and understanding it could help address congenital anomalies.

Human hair follicles switch between active and resting phases unpredictably.

Women with PCOS often have mood disorders and a lower quality of life, and treatment should focus on both physical and mental health.

Negative expectations can cause adverse effects in patients even without active treatment, and managing this nocebo effect involves better communication and patient-clinician relationships.

Male hormones, or androgens, affect women's health in areas like mood and bone density, and hormone replacement therapy using antiandrogenic progestogens can improve mood disorders and alertness in menopausal women.

Effective hair loss assessment requires a mix of precise measurement methods.

Male skin gets drier and more alkaline as it ages, which may need different skincare than women's skin.

Minoxidil helps regrow hair in female pattern hair loss, but more research needed for other treatments.

Stress from being transgender is linked to higher blood pressure at night and more inflammation, which may affect heart health.

Hormones, nutrition, and seasonal changes regulate hair growth cycles, with androgens extending growth phases and factors like aging and malnutrition affecting hair loss and thinning.

The review found no clear link between vitamin D receptor gene variations and polycystic ovary syndrome.

Women with PCOS have a higher risk of diabetes, heart problems, certain cancers, and mental health issues, but early treatment can help manage these risks.

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

FPHL common in Taiwanese women; risk factors include BMI, high glucose, early puberty, fewer childbirths, oral contraceptives, and UV exposure.

Dermoscopy helps diagnose frontal fibrosing alopecia by distinguishing it from other hair loss conditions.

Testosterone and dihydrotestosterone play a role in women's health issues like excess hair and baldness, and treatments blocking these hormones may help.

Acanthosis nigricans is a skin condition that may indicate a higher risk for insulin resistance and type 2 diabetes, and more research is needed to understand and treat it.