There is no scientific data showing that masturbation causes endometriosis. However, improper masturbation may cause reproductive system infections and gynecological diseases.
If you do not pay attention to hygiene when masturbating, it may cause reproductive system infection. It is recommended to clean well and keep the area dry and hygienic.
If during menstruation, female patients masturbation is easy to increase bacteria, growth and reproduction in the female reproductive system, it may cause vaginitis, cervicitis, endometritis, pelvic inflammatory disease, adnexitis and other kinds of gynecological inflammatory diseases, which may have a certain impact on the health of the body.
Therefore, masturbation during menstruation is not recommended.