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

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

New U.S. dietary guidelines for the first time include advice for men on maintaining healthy testosterone levels.

For those who need it—men who have low levels of testosterone with symptoms such as low energy, a low libido, and depression, ...

Understanding Testosterone Replacement Therapy and Its Alternatives Clearwater, United States – January 5, 2026 / The ...

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 ...

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 ...

Add Yahoo as a preferred source to see more of our stories on Google. Reeder explains that testosterone is far more involved than you would first think -- it plays are part in everything from muscle ...

Testosterone therapy is on the rise as men seek more energy and vitality, revealing shifting views on aging and modern ...

Starting around age 40, many men notice the first physical changes that may be related to their hormone levels: Energy wanes ...

Q. You recently wrote that testosterone does not increase the risk for heart attacks. But you overlooked the real risk of ...