something everybody should have. but if you are looking at the target of alzheimer's, i don't think that is influenced by lifestyle. >> jamie: all right, doctor. interesting. >> eric: there is a new recommendation out this week we'll talk about that has to do with cholesterol screenings, whether or not they should start in childhood. we are talking about screenings for kids as young as 9 years old. what does the study say about that? >> well, you know, elevated cholesterol and abnormallnormald are risk factor for development of arterial sclerosis later in life. many doctors now believe that the earlier you start to correct the abnormalities the better it is. there is nothing magic about, magical about h-30 or 35 -- age 30 or 35. more doctors believe if you identify abnormal lipids,