A statin can be a lifesaver if you're at risk of heart disease, but some people who take the cholesterol-lowering drugs -- up to 20 percent, by some estimates -- have to stop because of muscle pain, the most common side effect. (Nearly 30 million people filled a statin prescription in 2005, according to the Agency for Healthcare Research and Quality. Statins include popular drugs such as Crestor, Lipitor, and Zocor.)

President Barack Obama said Friday he looked forward to signing a bill that would give the Food and Drug Administration power to regulate the manufacturing, marketing and sale of tobacco.