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A 2013 guideline from the American College of Cardiology and American Heart Association (ACC/AHA) suggested statin therapy for primary prevention if a patient's 10-year risk for cardiovascular (CV) events — as calculated on an ACC/AHA risk calculator — exceeded 7.5%. But in an update published during the past year, the guideline committee revised its approach to primary prevention somewhat. For middle-aged adults (age range, 40–75) with LDL cholesterol levels between 70 and 189 mg/dL and with 10-year risk ≥20%, statins are recommended unequivocally. However, the authors created a broad new “intermediate risk” category, defined as 10-year risk between 7.5% and 19.9%. For these patients, the guideline states that statin therapy “should be con…