Healthy People initiatives libertarian paternalism baby boomers versus the older old health promotion and disease prevention age rectangle activities of daily living and instrumental activities of daily living chronic conditions and disability centenarians and supercentenarians causes of death sociodemographic trends: marital status, educational status, poverty, Internet access, political power labor force participation rate racial and ethnic composition acculturation extraordinary accomplishment primary, secondary, and tertiary prevention seven dimensions of wellness antiaging versus proaging compression of morbidity health expectancy versus life expectancy