taking intoonsideration ltiple factors. it's a more personazed approach. >> i think doctors will naturally findhese guidelines easy to us cause the focus is not on the number. it is on the right intensity of therapy. >> rorter: the recommendatns incle moderate or intensive statin therapy for those with cardiovascular disease. those with ld numbers hier, anpeople with elevated risk of rdiovascular disease determined by a newly developed ri calculator. some experts worry about relying too heavily on statins. >> even though the evidence shows us in many situatis there's ing to be short-term benefit to taking statin therapy, tt in the long haul it might aually inhibit us from adopting and embracing a heart heal yes lifestyle. >> rorter: stayhealthy. don'smoke and watch what you eahasn't changed. stephanie gosk, nbc news, new york. so ls of questions tonigh wi us annternistnd our chief medical officer at nbc universal. all right, doc. is story came out at 4:00 eastern today. means starting when you lea he tonight and go into tom