Estrogen is a beneficial hormone in both males and females. It has many benefits beyond involvement in reproduction. In males and females, estrogen is essential to bone health and cardiovascular protection. Decreased estrogen levels have been correlated with decreased memory and cognitive function.
In females, it is important for maintaining the health of the sex organs, sex drive, and sexual function. In males, lack of estrogen, even with normal testosterone, there can be issues with sex drive and erectile dysfunction so balance is essential.