Medically reviewed by Peter Weiss, MD Estrogen is a hormone that plays an important role in reproduction. It's the primary ...

In perimenopause, estrogen levels can fluctuate greatly, with the hormone eventually declining to very low levels once ...

Estrogen is a hormone that naturally occurs in a person’s body. Levels of estrogen that are too high or too low can cause a person to have health problems. This article will discuss the role of ...