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

So, for instance, having a testosterone level lower than 300 on one occasion isn’t enough to diagnose low T. A more accurate way to determine if your testosterone levels are notably low is to look for ...

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 ...