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COVID-19 may harm male reproductive health and lower testosterone levels, potentially affecting fertility and causing erectile dysfunction. More research is needed.

Using anabolic-androgenic steroids can harm men's reproductive health and increase the risk of heart problems and death.

Interval training is better for heart and metabolic health in reproductive-aged females than regular moderate exercise.

Gender-affirming hormone therapy improves physical performance in trans men to the level of cisgender men, while in trans women, it increases fat mass and decreases muscle mass, with no advantage in physical performance after 2 years.

Gaining 5-10 kg during the non-growing period boosts cashmere yield and length in goats.

Certain genes influence wool, growth, and reproduction traits in Uruguayan Merino sheep.

Feeding goats more during the non-growing period increases cashmere yield and length.

Vertical sleeve gastrectomy improved metabolism, behavior, and reproduction in obese rats with PCOS.

A model using hormone levels, cycle length, and BMI can help identify PCOS in Chinese women but isn't for screening teens.

Microextraction techniques improve hormone testing while being environmentally friendly.

Anabolic-androgenic steroids can harm women's health and their offspring.

Hair analysis for stress and reproductive hormones in wildlife needs more research for accuracy across species.

Observers often disagree on ultrasound results for polycystic ovaries, needing better training for consistency.

PCOS is common in Brazilian women and linked to metabolic and reproductive issues.

Eating too much selenium can cause bad breath, hair loss, and nail changes, with harmful effects starting at low daily doses.

A new method effectively measures nicotine and cotinine in blood and urine for forensic analysis.

Soybean extract may help hair growth in testosterone-related hair loss.

Enobosarm significantly increased muscle mass and improved physical function in elderly men and postmenopausal women without serious side effects.

Analyzing follicular fluid can help predict and improve outcomes for women with PCOS undergoing fertility treatments.

Athletes use steroids to enhance performance despite health risks and legal issues, and education on their dangers is needed.

Hormones control reproduction and are crucial for body balance.

Essential oils can boost athletic performance by improving brain function and muscle relaxation.

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.

Women with PCOS have altered brain structure and reduced cognitive performance.

Cows in El-Behera have nutritional deficiencies causing health issues like anemia and poor reproduction.

The document concludes that sex hormones are crucial for mammalian reproduction, health, and behavior, and require more research for therapeutic use.

Fenugreek seed extract boosts testosterone and improves male reproductive health without heart side effects.

Citrullus colocynthis and Citrullus lanatus have potential health benefits but may also cause reproductive toxicity.

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

The research found that PCOS has common genetic factors regardless of how it is diagnosed and is linked to metabolic and reproductive issues.