1. Bureau, U. C. Older Population and Aging. United States Census Bureau https://www.census.gov/topics/population/older-aging.html (2023).
2. Chamie, J., Berkman, L., Hayutin, A. M., Smith, J. P. & Hoeksema, M. J. Why Population Ageing Matters: A Global Perspectives (Center for Migration Studies, 2007).
3. CDC. Equitably Addressing Social Determinants of Health and Chronic Diseases, CDC https://www.cdc.gov/chronicdisease/healthequity/social-determinants-of-health-and-chronic-disease.html?CDC_AA_refVal=https%3A%2F%2Fwww.cdc.gov%2Fchronicdisease%2Fprograms-impact%2Fsdoh.htm (2022).
4. Lopes, L., Montero, A., Presiado, M., Liz H. Americans’ Challenges with Health Care Costs. KFF https://www.kff.org/health-costs/issue-brief/americans-challenges-with-health-care-costs/ (2023).
5. Chetty, R. et al. The association between income and life expectancy in the United States, 2001-2014. JAMA 315, 1750–1766 (2016).