Sex and cervical erosion are not necessarily related. Sex does not cause cervical erosion, but is influenced by estrogen levels in the body. During the reproductive years, women have higher estrogen levels in their bodies, and the cervical columnar epithelium is displaced under the effect of high estrogen levels, resulting in erosion-like changes to the naked eye, which is actually columnar epithelium. If a woman’s estrogen level is low after menopause, she will not normally develop cervical erosion. So even if the patient is not sexually active, she may have cervical erosion when her estrogen levels are high.