Summary: In a qualitative study following a 12-week dietary trial, African American adults at risk of type 2 diabetes described their experiences following three US Dietary Guidelines patterns, and the findings point to a need for culturally adapted versions to improve acceptability and adherence.
PICO Summary
| Element | Detail |
|---|---|
| Population | 42 African American adults (median age 52) in the Southeastern US who had completed a 12-week dietary intervention (Dietary Guidelines: 3 Diets study); qualitative focus-group study. |
| Intervention | Following one of three unmodified US Dietary Guidelines patterns: Healthy US, Mediterranean, or Vegetarian. |
| Comparison | Qualitative exploration of acceptability and perceptions (no statistical comparison). |
| Outcome | Participants described barriers and facilitators to dietary change and varying cultural fit across the three patterns. The overarching finding was that adaptations to the guideline patterns are needed to ensure cultural relevance for African American adults, with participants offering concrete suggestions to improve implementation. |
Expert Commentary
This is a valuable qualitative study that fills a real gap, since national dietary guidelines are typically developed and tested in ways that do not guarantee cultural relevance for the communities most affected by type 2 diabetes. Its strength is methodological fit: rather than forcing a numeric outcome, it uses focus groups to surface why people do or do not engage with prescribed eating patterns, and the central message, that the guideline diets need cultural adaptation to be acceptable and sustainable for African American adults, is both credible and actionable. I would read it for what qualitative work can and cannot do. It generates rich hypotheses about barriers, food traditions, cost, and relevance, but it cannot quantify how much adaptation improves adherence or glycaemic outcomes, and the sample of 42 from one region reflects particular contexts rather than all African American communities. There is also no significance testing to report, which is appropriate for the design but worth stating plainly. Can I use this with my patients? Yes, in approach rather than numbers. It reinforces tailoring dietary advice to a patient’s culture, tastes, budget, and food environment rather than handing over a generic guideline, and it supports involving patients in adapting recommendations so they are realistic to sustain.
References
Aydin HZ, Okpara N, Dubois KE, et al. Perceptions of the three dietary patterns of the 2020-2025 United States Dietary Guidelines among African American adults after a 12-week randomized intervention trial to reduce type 2 diabetes risk: a qualitative study. Nutrients. 2025;17(21):3453. doi:10.3390/nu17213453