RecruitingEstablishment of a Lifetime of Cohort of Adults Surviving Childhood CancerChildhood cancer predisposes to health risks that may not become apparent until many years after completion of therapy. The SJLIFE protocol is designed to establish a lifetime cohort of childhood cancer survivors treated at St. Jude Children's Research Hospital to facilitate evaluation of health outcomes in aging adults surviving pediatric cancer. The study focuses on the following Primary and secondary objectives: * To establish a lifetime cohort of childhood cancer survivors treated at St. Jude Children's Research Hospital to facilitate evaluation of health outcomes in aging children and adults surviving pediatric cancer. * To estimate the prevalence, cumulative incidence, and latency of selected late treatment complications following predisposing therapeutic exposures in children and adults surviving pediatric cancer. * To identify treatment, demographic, and psychosocial / behavioral related predictors of adverse health outcomes. * To develop risk profiles for adverse health outcomes across the age spectrum to guide development of clinical screening guidelines and risk-reducing interventions. * To identify factors that may be protective against the development of specific late treatment complications. * To generate data for a series of future hypothesis-driven trials * To serve as a source for the collection of samples from child and adult volunteers for future SJLIFE research. * To collect health outcomes data on a community control population for comparison purposes. * Characterize longitudinal social determinants of health (SDOH) to examine how living conditions, social integration, and structural inequality interact with personal social integrations/support to influence health.