Cambridge, Massachusetts - Since the 1970s, U.S. doctors have prescribed lithium to treat patients with bipolar disorder. While the drug has a good success rate, scientists are still unsure exactly how it achieves its beneficial effects.

Boulder, Colorado - A new University of Colorado Boulder study shows that using an electrically-powered bicycle on a regular basis can provide riders with an effective workout while improving some aspects of cardiovascular health, especially for riders who previously had been sedentary.

Scottsdale, Arizona - Many types of intrauterine devices, or IUDs, are available. The specific kind that has been approved by the U.S. Food and Drug Administration for treatment of heavy menses releases the hormone progestin. This type of IUD is safe and highly effective for easing periods that are heavier than normal. IUDs are not the only option for treating this condition though. Before you move forward, consider talking with your doctor about the range of treatment choices available to you.

Dallas, Texas - UT Southwestern Medical Center researchers have uncovered a mechanism that a type of pathogenic bacteria found in shellfish use to sense when they are in the human gut, where they release toxins that cause food poisoning.

Scottsdale, Arizona - To prevent food poisoning at home: