3. Avoid: Coffee and black tea -- even decaf

Most people with overactive bladder know to avoid coffee. It's a diuretic, which causes you to urinate more often, and it contains caffeine, which stimulates the bladder. The surprise: Even decaf versions have this effect. That's because decaffeinated coffee and tea are seldom caffeine-free. (Avoid iced tea and coffee, as well as hot forms.)

Better: Drink herbal tea, which has no caffeine.