As reported by Reuter’s Health, researchers from Sweden studied twins of childbearing age between the ages of 20 and 46 years to determine whether the birth control pill or an IUD (intrauterine device) which released hormones had any impact on bladder weakness, compared to women who did not use birth control.
It was found that, after controlling for possible confounding factors such as weight, age and pregnancy, women who took birth control pills had a 43% less chance of suffering from stress incontinence and a 64% less risk of suffering from urge incontinence. Stress incontinence occurs when stress is placed on the bladder, such as when a woman coughs, sneezes, or laughs. Urge incontinence occurs when women experience leakage of urine from the inability to hold their urine once the urge is felt to urinate.
No difference in bladder weakness symptoms was found in women who had an IUD in place. Researchers state that further research is needed to determine the relationship between taking the pill and bladder weakness.

