Does a cervical cap provide protection against sexually transmitted infections (STIs)?

A cervical cap does not provide protection against sexually transmitted infections (STIs). Its primary function is to serve as a barrier method of contraception, designed to prevent sperm from entering the uterus and thus prevent pregnancy. While it can provide some physical barrier during intercourse, the materials and design of cervical caps do not effectively block the exchange of bodily fluids that can transmit STIs, such as HIV, gonorrhea, or chlamydia.

Other contraceptive methods, like condoms, are specifically designed to create a barrier that helps reduce the risk of STIs due to their ability to cover the penis completely or line the vaginal canal. In contrast, while a cervical cap may reduce the risk of pregnancy, it lacks the protective qualities needed to safeguard against STI transmission. This highlights the importance of using condoms or other dual protection strategies in conjunction with a cervical cap to achieve both contraceptive and STI protection.