A Mixed-Methods Examination of the Impact of the Partnerships to Improve Community Health Produce Prescription Initiative in Northeastern North Carolina

Examining Food Security, Fruit and Vegetable Intake, and Cardiovascular Disease Risk Outcomes of Produce Prescription (PPR) Programs: A Systematic Review

OBJECTIVE

Outcomes from produce prescription (PPR) programs, an exemplar of a Food is Medicine intervention, have not been synthesized. The objective of this study was to conduct a systematic review to examine the impact of PPR programs on food security, fruit and vegetable (FV) intake, and/or cardiovascular risk factors (HbA1c, blood pressure, and blood lipids).

DESIGN

Searches were conducted across three databases (PubMed, CINAHL, and Web of Science). Eligible studies were published between August 2012 and April 2023, conducted in the US in child/family, or adult populations, written in English and had a PPR program as an exposure.

OUTCOMES VARIABLES MEASURED

Food security, FV intake, and/or cardiovascular risk factors.

RESULTS

Twenty studies ranging from a duration of between 6 weeks to 24 months were included. Of the 5 studies (3 in child/family and 4 in adult populations) that analyzed changes in food security status, all reported significant (P < 0.05) improvements after the PPR program. Approximately half of the included studies found significant (P < 0.05) increases in fruit, vegetable, and/or FV intake. Only studies in adult populations included cardiovascular risk factor outcomes. In these studies, mixed findings were reported; however, there were significant (P < 0.05) improvements in HbA1c when PPR programs enrolled individuals with type 2 diabetes.

CONCLUSIONS AND IMPLICATIONS

PPR programs provide an opportunity to improve food security in child/family, and adult populations. Evidence to support whether PPR programs increase FV intake and improve cardiovascular disease risk factors outside of HbA1c in adult populations with high HbA1c upon enrollment is less known.

Implementing a Food Prescription Program during COVID-19: Benefits and Barriers

Food prescription programs (Food Rx) have the potential to improve management of diet-related chronic diseases or underlying conditions such as type 2 diabetes (T2D), hypertension, and high body mass index (BMI) among food-insecure patients. The purpose of this study was to examine the effectiveness of a Food Rx program implemented in two community-based clinics in Florida. Data were collected through researcher-administered surveys (food insecurity, demographics, and socio-economic variables) and biometric data (HbA1c, blood pressure, and BMI). Key results include the following: (1) Hispanic patients are more likely to utilize the program than their Black and White counterparts (p < 0.001); (2) older patients (≥50 years) have a higher food redemption rate when compared to younger patients (36-49.9 years); (3) food redemption rate is negatively associated with food security scores indicating improvements in food security status over time (r2 = -0.184, p = 0.036); (4) diabetic patients with higher baseline HbA1c (>9%) have significant reductions in glycated hemoglobin (p = 0.011) over time as compared to patients with lower baseline values (<7%); and (5) patients enrolled in the program for at least 6 months have a significant reduction in systolic blood pressure (p = 0.051). Changes in BMI were not significantly associated with redemption rates. This study is significant as it offers insights into the potential benefits and challenges of implementing Food Rx programs to address diet-related chronic diseases among underserved populations.

A Rural Delivery-Based Produce Prescription Intervention Improves Glycemic Control and Stress

OBJECTIVE

We examined the impact of a pilot 24-week delivery-based produce prescription (PRx) intervention with tailored education and culinary resources for rural patients (n = 40) with type-2 diabetes in underresourced communities on behavioral and clinical outcomes.

METHODS

We used a single group pretest-posttest design that included a home-delivered PRx, culturally tailored recipes, and health/nutrition education handouts. Measures included hemoglobin A1c (HbA1c), self-reported fruit/vegetable consumption, and stress. Descriptive statistics, t-tests, and Wilcoxon signed rank tests were conducted.

RESULTS

Mean HbA1c decreased from 7.6 ± 1.6% to 7.1% ± 1.4% (P = 0.001). Self-reported consumption of fruit/vegetables improved, including frequency and serving size of beans (P = 0.01 and P = 0.01), serving size of lettuce salad (P = 0.02), and serving size of vegetable soup (P = 0.001). Perceived stress decreased (P = 0.01).

CONCLUSION AND IMPLICATIONS

Findings from this pilot PRx intervention suggest a delivery-based PRx with tailored educational resources has the potential to reduce HbA1c and stress while improving fruit/vegetable consumption within rural patients with type-2 diabetes in underresourced communities.

Development and Evaluation of the Delivery-Based HEALED Produce Rx Program for Uninsured Patients With Diabetes in Rural Eastern North Carolina

Produce prescription (PRx) programs have emerged as a preventive treatment to subsidize the cost of fruits and vegetables for people with lower income and have shown promise in improving diet quality and diabetes-related health outcomes (eg, glycated hemoglobin A_1c). Researchers from the Department of Nutrition Science at East Carolina University worked with the Wayne Action Teams for Community Health (WATCH) Clinic, a safety-net clinic in rural Eastern North Carolina, and a local research farm to develop a PRx program for rural patients with type 2 diabetes and no health insurance. Preliminary patient surveys identified high levels of interest in a PRx program and a desire for recipes to accompany the produce. Formative evaluation results via telephone interviews with eligible patients identified transportation barriers to participation and the desire for complementary nutrition education and culinary resources. These results led to a delivery-based PRx program implemented from June through November 2021. Patients received weekly home delivery of an average of 4.7 pounds of fruits and vegetables and complementary nutrition and health education materials and culinary resources (cookbook, recipes). The level of patient satisfaction with the program was high; the reported level of consumption of produce, including unfamiliar produce, was high; educational resources were associated with increased knowledge and motivation to make healthful lifestyle changes, and glycemic control significantly improved. Ensuring that patients have a voice in the design and implementation of PRx programs is crucial to success. Ongoing use of rigorous formative and process evaluations can ensure appropriateness, use, and a positive effect of PRx programs, and they are needed to establish best practices for implementation.

A Produce Prescription Program in Eastern North Carolina Results in Increased Voucher Redemption Rates and Increased Fruit and Vegetable Intake among Participants

Few produce prescription programs have taken place in rural areas, in the context of existing public health programs. Thus, the purpose of this mixed-methods study was to examine voucher redemption rates, change in fruit and vegetable intake, and suggestions for improvement among participants enrolled in a produce prescription program occurring in existing public health programs throughout rural eastern North Carolina. We examined voucher redemption rates and conducted pre- (n = 125) and post-intervention surveys assessing fruit and vegetable intake. t-tests were used to examine changes in intake pre- versus post-intervention among 50 participants. Participants (n = 32) also completed a semi-structured, telephone interview. Qualitative data were thematically analyzed to determine potential improvements. The overall voucher redemption rate was 52%. There was a 0.29 (standard deviation = 0.91, p = 0.031) cup increase in self-reported fruit intake comparing post- to pre-intervention data. Qualitative analyses indicated that participants enjoyed the financial benefits of the program and wanted it to continue. The produce prescription program was successful in increasing self-reported fruit intake among participants. More research is needed to determine if changes in intake persist when measured objectively, and on best methods for the program’s financial sustainability.