Contracted, cont.

Sexual intercourse can contribute, too, because the motion can cause tendency for bacteria to reach the urethra, from which they ascend to the bladder. Pregnant woman are especially likely to develop cystitis because the pregnancy itself can interfere with emptying of the bladder.

Use of diaphragms, use of condoms coated with spermicide also increases the risk. The decrease in estrogen production that occurs after menopause.