How does low testosterone affect sex drive?

Testosterone levels play a nearly unquantifiable role in promoting healthy sexual function in men. Not only does testosterone ensure that male sex organs are receiving a healthy, balanced amount of hormones, it also promotes erectile health and libido. So, low levels of testosterone (Low T) can certainly cause erectile dysfunction and diminished sex drive. Furthermore, a lower level of testosterone in the body can cause a hormonal imbalance that favors female-oriented hormones like estrogen and prolactin, which can result in an increase in body fat, an increase in the size of breasts, and more.