Health effects Of course, the diaphragm doesn’t have any serious or negative impact on the body, nor it gets lost inside the vagina or somewhere inside the upper reproductive tract. Beneficial Effects When a diaphragm is used with two teaspoons of spermicide, it offers an outstanding protection against the bacteria that tend to cause serious STDs, such as Chlamydia, Trichomoniasis, and Gonorrhea. Additionally, the risk of having cancer of the cervix seems to be extremely low among the women who continuously prefer using a diaphragm when having intercourse for at least five years Urinary Tract Infections Some women using diaphragms acquire a slightly increased risk ...