Low estrogen levels in women might come from a vitamin D deficiency and result in a lower sex drive. Men get the same effects from sun exposure. The female sex hormone, estrogen, is not only in charge of a high sex drive but also plays a role in maintaining the health of the muscles in the vaginal wall and causing discharge.
Low estrogen can result in having little desire for sex. It can cause discomfort when you do get down and dirty. Without this secretion, the vagina will be drier than normal, making sex uncomfortable.