Incontinence, the inability to control excretory functions, is a common problem. In fact, the National Institutes of Health estimates that 13 million adults suffer from urinary incontinence. It is not just a symptom of age or infirmity. The muscles in the bladder and urethra may become weak due to childbirth resulting in accidental wetting when one coughs or laughs. Loss of hormones during menopause could also help to weaken the urinary system. Other causes include damage to bladder nerves, urinary tract, or a blockage in the urethra, a rarity in women.