BOSTON (March 19, 2019, 2:00 p.m. ET)--A team of researchers modeled the health and economic effects of healthy food prescriptions in Medicare and Medicaid. The study, published today in PLOS Medicine, finds that health insurance coverage to offset the cost of healthy food for Medicare and/or Medicaid participants would be highly cost effective after five years and improve health outcomes.
"We found that encouraging people to eat healthy foods in Medicare and Medicaid - healthy food prescriptions - could be as or more cost effective as other common interventions, such as preventative drug treatments for hypertension or high cholesterol," said co-first author Yujin Lee, Ph.D., postdoctoral fellow at the Friedman School of Nutrition Science and Policy at Tufts.
"Healthy food prescriptions are increasingly being considered in private health insurance programs, and the new 2018 Farm Bill includes a $25 million Produce Prescription Program to further evaluate this approach," she continued.
The study estimated the economic and health benefits that would accrue if 30 percent of the cost of healthy food purchases in supermarkets and grocery stores were covered through Medicare and Medicaid, through an electronic debit card. Two scenarios were modeled: 30 percent coverage of fruit and vegetable purchases; and 30 percent coverage of purchases of fruits, vegetables, whole grains, nuts/seeds, seafood, and plant-based oils.
The model estimated that both of these programs would improve health and lower healthcare utilization. Over a lifetime of current beneficiaries, the fruit and vegetable incentive would prevent 1.93 million cardiovascular disease (CVD) cases; while the broader healthy food incentive would prevent 3.28 million CVD cases and 120,000 diabetes cases. (Only the latter incentive was predicted to reduce diabetes cases because of the role that whole grains and nuts/seeds have in diabetes prevention.)
Both the fruit and vegetable incentive and the broader healthy food incentive were estimated to reduce healthcare utilization, with savings of $39.7 billion and $100.2 billion, respectively. Total food subsidy and other policy costs were $122.6 billion for the fruit and vegetable incentive and $210.4 billion for the broader healthy food incentive. Considering net costs vs. savings and health benefits, both programs were highly cost-effective, with incremental costs of $18,184 per quality-adjusted life-year (QALY) gained for the fruit and vegetable incentive, and $13,194 per QALY gained for the healthy food incentive. (The conventional cutpoint for a medical intervention to be considered cost-effective is less than $150,000 per QALY gained; while costs less than $50,000 per QALY gained are considered highly cost-effective and medical 'best buys.')
"Our findings support implementation and evaluation of healthy food prescriptions within healthcare systems to improve the diet and health of Americans," said co-senior author Renata Micha, R.D., Ph.D, research associate professor at the Friedman School.
"Medicare and Medicaid are the two largest healthcare programs in the U.S., together covering one in three Americans and accounting for 1 in every 4 dollars in the entire federal budget," said co-first author Dariush Mozaffarian, M.D., Dr.P.H, dean of the Friedman School.
"These new findings support the concept of Food is Medicine: That innovative programs to encourage and reimburse healthy eating can and should be integrated into the healthcare system," he continued.
A validated micro-simulation model (CVD Predict) generated samples representative of the Medicare, Medicaid, and dual-eligible populations. The model utilized national data from the three most recent National Health and Nutrition Examination Surveys (NHANES 2009-2014), as well as data from published sources and meta-analyses, which included demographics, dietary intakes, policy effects, diet-disease effects, policy costs, and healthcare costs. The two intervention scenarios were applied to each of the three samples and assessed the impact at 5, 10, and 20 year horizons and at a simulated lifetime horizon.
This study is a part of the Food Policy Review and Intervention Cost-Effectiveness (Food-PRICE) research initiative, a collaboration of researchers working to identify cost-effective nutrition strategies to improve health in the United States.
The researchers caution that the study cannot prove the health and cost effects of the incentives modeled. The study is intended to provide the best available national estimates of potential impacts that can be considered at the federal level when designing and evaluating incentive programs.
The co-senior author on the study is Thomas Gaziano, M.D., M.Sc., who was also corresponding author on the CVD Predict modeling study. He is an assistant professor in the department of health policy and management at Harvard T.H. Chan School of Public Health and director of the global cardiovascular health policy and prevention unit at Brigham and Women's Hospital.
Additional authors on this study are Stephen Sy, M.S., Brigham and Women's Hospital; Yue Huang, M.S., Junxiu Liu, Ph.D., and Parke E. Wilde, Ph.D., all at the Friedman School; Shafika Abrahams-Gessel, S.M., Dr.P.H., Brigham and Women's Hospital; and Thiago de Souza Veiga Jardim, M.D., Ph.D. of Brigham and Women's Hospital and the Harvard T.H. Chan School of Public Health.
Lee, Y., Mozaffarian, D., Sy, S., Huang, Y., Liu, J., Wilde, P., Abrahams-Gessel, S., de Souza Veiga Jardim, T., Gaziano, T., and Micha, R. (2019). Cost-effectiveness of financial incentives for improving diet through Medicare and Medicaid: A microsimulation study. PLoS Med 16(3): e1002761. https://doi.org/ 10.1371/journal.pmed.1002761
This work was supported by awards from the National Institutes of Health's National Heart, Lung, and Blood Institute (R01HL130735, R01HL115189). Additional support was provided by an American Heart Association postdoctoral fellowship award (17POST33670808). The content of this announcement is solely the responsibility of the authors and does not necessarily represent the official views of the National Institutes of Health or other funders. For conflicts of interest disclosure, please see the study.
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About the Friedman School of Nutrition Science and Policy at Tufts University
The Gerald J. and Dorothy R. Friedman School of Nutrition Science and Policy at Tufts University is the only independent school of nutrition in the United States. The school's five divisions - which focus on questions relating to nutrition and chronic diseases, molecular nutrition, agriculture and sustainability, food security, humanitarian assistance, public health nutrition, and food policy and economics - are renowned for the application of scientific research to national and international policy.