The investigators have been following 100 families who are 3rd and 4th generation descendants of the original Framingham Heart Study cohort. The subjects were age 3-5 years at the onset of the study and were ages 11-14 years in 1996. There has been excellent cohort maintenance with over 90 percent of the original families continuing to participate. The study was renewed in FY 1996 to extend the Framingham Children's Study (FCS) to permit the evaluation of the determinants of change in the child's risk behaviors and other risk factors from early childhood through puberty to mid to late teens, a time when the individual's risk profile should better reflect his/her cardiovascular risk status as an adult.