Retail Nutrition Programs and Outcomes: An Evidence Analysis Center Scoping Review

Impact of a Registered Dietitian Nutritionist-Led Food as Medicine Program in the Food Retail Setting: A Feasibility Study

BACKGROUND

Food as medicine (FAM) interventions have been associated with improved health outcomes. However, there is limited FAM evidence in food retail settings.

OBJECTIVE

The objective was to evaluate the feasibility of a registered dietitian nutritionist-led FAM program that aims to detect changes in participants' nutrition problems and related nutrition and health outcomes, as documented by the Nutrition Care Process framework.

DESIGN

The study was a descriptive feasibility nutrition intervention cohort analysis.

PARTICIPANTS SETTING

A convenience sample of online food shoppers were enrolled in collaboration with a food retail chain (n = 39 participants completed the intervention and were included in primary analyses).

INTERVENTION

Participants received nutrition care for 6 months either in person or via telehealth. The FAM intervention included tailored nutrition care that integrated software-generated meal plans and food shopping lists to support online food shopping.

MAIN OUTCOME MEASURES

Progress of nutrition problems and diet quality (assessed via the Picture your Plate survey) were measured. Measurements included changes in anthropometric and biochemical parameters, blood pressure, and quality of life (assessed via the Centers for Disease Control and Prevention's Health Related Quality of Life-14 survey).

STATISTICAL ANALYSES PERFORMED

Mann-Whitney U test, Pearson's χ2, and Wilcoxon signed-rank tests were used to detect differences.

RESULTS

The most prevalent nutrition problems demonstrated improvement rates as follows: excessive energy intake, 81% (n = 21 of 26); excessive carbohydrate intake, 88% (n = 7 of 8); and obesity, 100% (n = 5 of 5). Exposure to the FAM intervention improved dietary quality, quality of life, body weight, waist circumference, and systolic pressure.

CONCLUSIONS

FAM interventions can be carried out by in-store registered dietitian nutritionists in the supermarket setting. This feasibility study highlighted the need and opportunity for larger studies in which registered dietitian nutritionist-led FAM interventions, in collaboration with food retailers, may improve people's nutrition and health.

Perspectives of Food as Medicine Concept: Report of an Online Convenience Sample Survey of Registered Dietitian Nutritionists

BACKGROUND

In 2019, the Academy of Nutrition and Dietetics (Academy) Foundation launched a project to leverage registered dietitian nutritionists (RDNs) leading "food as medicine" (FAM) initiatives within food retail settings. Subsequently, a conceptual definition of FAM was created.

OBJECTIVE

This survey aimed to gauge RDNs' familiarity with FAM, assess RDNs' perceptions of the Academy's FAM definition, and prioritize program models for food retail implementation.

DESIGN

Development and testing of this cross-sectional survey involved expert content validation, cognitive interviews, and field testing.

PARTICIPANTS

One thousand five hundred fifty-two RDN Academy members completed the online survey.

MAIN OUTCOME MEASURES

Familiarity and perception of FAM was evaluated by asking participants about FAM focus areas, Academy definition, concept integration, and FAM program models within food retail settings.

STATISTICAL ANALYSES PERFORMED

Quantitative results were analyzed descriptively, using frequencies and proportions; content analysis was used on qualitative results to analyze open-ended responses.

RESULTS

Most respondents had heard the term FAM (94%) and were familiar with the concept (95%). Before learning the Academy's FAM definition, RDN views of the concept aligned with the definition's strategic focus areas (health and well-being, disease management and treatment, nutrition security, food safety). Overall, 77% of RDNs surveyed had a positive perception of the Academy's FAM definition. Sixty-nine percent also found food retail settings favorable for integrating FAM programming. Because of the limited number of RDNs identifying food retail as their primary practice setting (n = 12), data on prioritizing program models in these settings were not analyzed.

CONCLUSIONS

RDNs in all practice settings can incorporate strategic focus areas outlined in the Academy's FAM definition. Further research is needed, particularly around use of the term by the RDN profession. A follow-up survey targeting a larger sample size of RDNs who practice in food retail settings is also necessary to further prioritize FAM program models in these settings.

Association of a Fruit and Vegetable Subsidy Program With Food Purchases by Individuals With Low Income in the US

IMPORTANCE

Food insecurity is associated with a less healthy diet. The Supplemental Nutrition Assistance Program (SNAP) is associated with reduced food insecurity, but benefit levels may be insufficient for beneficiaries to afford healthy foods.

OBJECTIVE

To evaluate whether participation in SuperSNAP, a program that provides an additional $40 per month for the purchase of fruits and vegetables with no added sugar, sodium, or fat to SNAP beneficiaries, is associated with changes in food purchasing.

DESIGN, SETTING, AND PARTICIPANTS

This longitudinal cohort study used data from transaction records of a large supermarket chain with approximately 500 stores located across North Carolina from October 2019 to April 2020. Participants were SNAP beneficiaries.

EXPOSURE

SuperSNAP participation.

MAIN OUTCOMES AND MEASURES

Monthly spending on all fruits, vegetables, legumes, and nuts (primary outcome); spending on less healthy food categories; and spending on sugar-sweetened beverages as 1 category of less healthy foods. Monthly data on purchases by SNAP beneficiaries before and during SuperSNAP participation were compared with data from SNAP beneficiaries not enrolled in the program who shopped at the same stores. Overlap weighting (a propensity score-based method) was used to account for confounding, and linear mixed-effects models were fitted with random effects to account for repeated measures and clustering by store.

RESULTS

The study included 667 SuperSNAP participants and 33 246 SNAP beneficiaries who did not use SuperSNAP but shopped in the same stores; 436 SuperSNAP participants had preintervention data and were included in the main analysis. SuperSNAP participation was associated with increased monthly purchases of fruits, vegetables, nuts, and legumes ($31.84; 95% CI, $31.27-$32.42; P < .001; 294.52 oz; 95% CI, 288.84-300.20 oz; P < .001). Only a small increase in spending on less healthy food categories compared with the SNAP beneficiaries who did not use SuperSNAP ($1.60; 95% CI, $0.67-$2.53; P < .001) was observed. As total spending increased, the proportion of total food and beverage spending on less healthy foods significantly decreased (difference, 4.51%; 95% CI, 4.27%-4.74%; P < .001). Monthly spending on sugar-sweetened beverages decreased (difference, $1.83; 95% CI, $1.30-$2.36; P < .001).

CONCLUSIONS AND RELEVANCE

In this cohort study, participation in SuperSNAP was associated with meaningful increases in healthy food purchasing. Subsequent studies should investigate whether healthy food incentive programs improve health outcomes.

The impact of a produce prescription programme on healthy food purchasing and diabetes-related health outcomes

Objective:

To evaluate a Produce Prescription Programme’s utilisation and its effects on healthy food purchasing and diabetes control among participants with type 2 diabetes.

Design:

Prospective cohort study using participants’ electronic health records and food transaction data. Participants were categorised as ‘Frequent Spenders’ and ‘Sometimes Spenders’ based on utilisation frequency. Multivariate regressions assessed utilisation predictors and programme effects on fruit/vegetable purchasing (spending, expenditure share and variety) and on diabetes-related outcomes (HbA1c, BMI and blood pressure).

Setting:

Patients enrolled by clinics in Durham, North Carolina, USA. Participants received $40 monthly for fruits and vegetables at a grocery store chain.

Participants:

A total of 699 food-insecure participants (353 with diabetes).

Results:

Being female and older was associated with higher programme utilisation; hospitalisations were negatively associated with programme utilisation. Frequent Spender status was associated with $8·77 more in fruit/vegetable spending (P < 0·001), 3·3 % increase in expenditure share (P = 0·007) and variety increase of 2·52 fruits and vegetables (P < 0·001). For $10 of Produce Prescription Dollars spent, there was an $8·00 increase in fruit/vegetable spending (P < 0·001), 4·1 % increase in expenditure share and variety increase of 2·3 fruits/vegetables (P < 0·001). For the 353 participants with diabetes, there were no statistically significant relationships between programme utilisation and diabetes control.

Conclusions:

Programme utilisation was associated with healthier food purchasing, but the relatively short study period and modest intervention prevent making conclusions about health outcomes. Produce Prescription Programmes can increase healthy food purchasing among food-insecure people, which may improve chronic disease care.