Its symptoms include a reduced sex drive, erection problems, and a low sperm count. Some people worry that too much estrogen is the cause of low testosterone, but this is a myth. Estrogen and testosterone do not oppose each other.

Does estrogen affect testosterone?

Testosterone is the most significant hormone to male sexual development and function. But estrogen needs to stay in balance with testosterone to help control sex drive, the ability to have an erection, and the production of sperm. Testosterone naturally decreases as men age, while estrogen increases.

Does estrogen suppress testosterone?

RESULTS: Estrogen-only therapy reduced the testosterone, luteinizing hormone and follicle-stimulating hormone levels from 731.5 to 18 ng/dL, 6.3 to 1.1 U/L and 9.6 to 1.5 U/L, respectively.