The term has existed in multiple variations in the algorithm for years. It has proliferated in recent times in the so-called ...

There are no official numbers for the optimal levels of testosterone, but certain medical laboratories use the following reference values for typical total serum testosterone, measured in nanograms ...

Young men are being encouraged to undergo testosterone testing and start hormone therapy through Instagram and TikTok content that promotes unproven health claims while downplaying medical risks, a ...

Men, if you’re feeling irritable, tired and have a low sex drive, the problem is a lack of testosterone, at least according to adverts plastered across London Underground stations. “It’s not him, it’s ...

Q. I have practiced medicine for decades. I learned long ago that many men begin to experience lower testosterone levels in their thirties and forties. Some older men end up with very low levels of ...

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James Kelly gets asked about testosterone at least once a day at his general practice in Sydney’s Double Bay. Some men, convinced that low testosterone is the cause of their fatigue, lack of ...

Testosterone levels peak in the morning and decrease throughout the day. Testosterone levels in men typically decrease by about 1% per year after their 30s. Low testosterone can cause symptoms like ...

Testosterone is often treated as a marker of health and vigor, especially in men. But new genetic evidence suggests it’s not all good: higher lifelong levels of the hormone may also increase the risk ...

Objectives We systemically reviewed the literature to assess how long-term testosterone suppressing gender-affirming hormone therapy influenced lean body mass (LBM), muscular area, muscular strength ...

Objective To examine the effect of gender affirming hormones on athletic performance among transwomen and transmen. Methods We reviewed fitness test results and medical records of 29 transmen and 46 ...