ORLANDO, Fla., Nov. 15, 2011 (GLOBE NEWSWIRE) -- If you're a patient with stable, chronic heart disease whose "bad" LDL cholesterol is well-controlled with statins, adding high doses of extended-release niacin to increase low levels of "good" HDL cholesterol won't further lower your risk of heart attack or stroke, according to late-breaking research presented at the American Heart Association's Scientific Sessions 2011.