A $3.2M study tests whether free produce boxes can move SNAP families from food security to nutrition security

More than 34 million Americans experience food insecurity, and the federal government spends billions through SNAP to help them afford groceries. But there is a gap between having enough food and having nutritious food - and that gap has a measurable cost. Families with food insecurity incur 20% higher healthcare spending, contributing to an estimated $1.1 trillion in annual costs to the U.S. economy from suboptimal dietary patterns.

A new five-year study, backed by a $3.2 million National Institutes of Health grant, is testing whether a targeted intervention through pediatric clinics can push SNAP families past food security toward what researchers call nutrition security - consistent access to fruits, vegetables, and other nutrient-dense foods rather than just calories.

The SNAP paradox

SNAP serves over 40 million Americans, roughly half of whom are food insecure. The program is designed to help low-income individuals and families afford a nutritionally adequate diet. But research has consistently shown a troubling pattern: SNAP recipients have lower fruit and vegetable intake than both income-eligible non-participants and higher-income families.

The reason most frequently cited is cost. Fruits and vegetables are expensive relative to calorie-dense processed foods. A dollar buys more calories from chips than from broccoli. This economic reality drives purchasing decisions, and SNAP benefits alone have not been sufficient to overcome it.

Programs like South Carolina's SNAP Healthy Bucks attempt to address this by offering fruits and vegetables at steep discounts. At participating locations, SNAP recipients can use their EBT card to purchase 15-18 pound boxes of produce for $5 (normally $20) or 18-22 pound boxes for $10 (normally $25). The economics are compelling. The awareness is not.

A 25% awareness rate

Elizabeth Adams, an assistant professor of exercise science at the University of South Carolina's Arnold School of Public Health, ran a pilot study and found that fewer than 25% of eligible families even knew the SNAP Healthy Bucks program existed. An effective discount program that nobody knows about is not an effective program.

Adams' NIH-funded study tackles this problem through an unlikely partner: pediatricians. Pediatric clinics already conduct social determinants of health screenings and make referrals to programs like SNAP. They are trusted sources of health information for families. But they have been underutilized as a channel for promoting fruit and vegetable incentive programs.

The study design

The research team will train pediatricians at clinics serving large SNAP populations to educate eligible families about the Healthy Bucks program. Families will then be randomly assigned to one of two groups: one receives education plus vouchers for a free trial of the program and eight months of free home delivery on all produce box orders; the other receives education only but retains access to the incentive program on their own.

By comparing outcomes between the two groups, the researchers can isolate the effect of removing the remaining barriers - the initial cost of trying the program and the logistics of getting the food home. If free trials and delivery meaningfully improve participation and diet quality, it would suggest that awareness and convenience, not just price, are critical bottlenecks.

The team will track parent and child dietary quality, household nutrition security, and participation rates in the Healthy Bucks program over time. They will also assess barriers and facilitators to implementation and sustainability - critical data for any potential scale-up.

Nutrition security as a framework

"There are several policies and programs designed to reduce food insecurity, but for greater impact, we need to simultaneously work towards nutrition security," Adams said. The distinction matters. Food security means having enough to eat. Nutrition security means having equitable access to foods that actually support health - fruits, vegetables, whole grains, and lean proteins rather than ultra-processed snacks and sugary beverages that provide calories but little nutritional value.

The study cannot answer every question. It is testing one intervention in one state's incentive program through one delivery channel. Whether the results would generalize to other states, other incentive structures, or other clinical settings remains to be seen. The five-year timeline is ambitious but may not capture long-term dietary behavior change or health outcomes.

But if connecting SNAP families with deeply discounted produce through their children's doctor can measurably improve diet quality, it would demonstrate a model that is replicable, relatively low-cost, and embedded in existing healthcare infrastructure - three qualities that scaling up often demands.