Common Risk Factors And Causes Of Cystitis

Use Of A Diaphragm

Women who use diaphragms are about twice as likely to develop cystitis than women who use other forms of birth control. The use of a diaphragm or spermicide doesn't just make cystitis more likely; it also increases the risk of recurrent cystitis. Most urinary tract infections are caused by bacteria, especially E. coli, which lives in the rectum and colon. Diaphragms and spermicide can work to kill off protective bacteria and change the pH balance of the vagina. Both factors can increase the growth of harmful bacteria that can cause an infection.

It isn't understood exactly why this happens, but research is clear normal vaginal bacteria are altered in women who use diaphragms. It's possible the diaphragm simply obstructs the urethra that leaves a small amount of urine in the bladder while allowing bacteria to multiply. If women use spermicide or a diaphragm, they may want to consider switching to a different birth control method like oral contraceptive or an intrauterine device.

Continue for more on what can cause cystitis.