From testosterone to FSH and LH, a number of hormones drive male fertility. These chemical messengers regulate sperm production, sex drive, and more. Imbalances have the potential to contribute ...

For more than 80 years, men have been told that testosterone fuels prostate cancer. But a more nuanced picture has emerged ...

What Is Low Testosterone (Testosterone Deficiency)? 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 ...

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 ...