Testosterone is the primary androgen — or male hormone — in your body. Low testosterone affects up to 39 percent of adult men in the US over the age of 45, and becomes increasingly prevalent as men ...

Genetics play a role in low testosterone for some men, but underlying causes vary widely. Many genes influence testosterone ...

Researchers are unlocking the mysteries of how low testosterone is related to men's overall health. Along the way, they're uncovering connections between low testosterone and other health conditions.

You don’t have to look far to find a new testosterone clinic, or T clinic, popping up. While many of these jump right into replacement therapy, they often don't uncover why testosterone is low, a ...

Total testosterone measures the full amount of the hormone in your blood, while free testosterone represents the small, ...

Certain health conditions can make it difficult for some men to have normal levels of testosterone. Low testosterone levels, also known as hypogonadism, can affect a person’s life, can cause different ...

As many as 15 percent of men have varicoceles, masses of enlarged and dilated veins in the testicles. There is new evidence that varicoceles, long known to be a cause of male infertility, interfere ...

Young adult male sitting on a bed with both hands holding his head seemingly having a headache. As men get older, declining testosterone levels are as inevitable as death and taxes. Around the age of ...

Know how zinc can boost testosterone levels and increase men's energy through natural food sources and supplements.

Although these foods have been linked to lower testosterone levels, they aren’t replacements for anti-androgen medication. You might’ve heard that certain foods can decrease testosterone levels.