Diet Guidelines: 3 diet Patterns (DG3d)

The Diet Guidelines: 3 Diet Patterns study was a one-year intervention among African American adults targeting risk factors of type 2 diabetes. As part of this study, participants were  randomized to follow one of three healthy diets that follow the US Dietary Guidelines: a Healthy-US dietary pattern, a Mediterranean dietary pattern, or a Vegetarian dietary pattern. Participants learned how to cook healthy and delicious recipes to enjoy the health benefits from nutritious meals that taste great.

 

Recruitment for the DG3D study is now closed. At this time, no additional enrollment opportunities are available for participation in the study. If you’d like to be notified about future studies, please complete our research interest form.

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Thank you for your interest in the DG3D study. Recruitment and enrollment for the study are now closed.  If you’d like to be notified about future studies, please complete our research interest form.  You can also check our list of active studies for other studies from the BRIE Lab.

Research from the DG3D STudy

  • Bailey S, Turner-McGrievy GM, Keseko EA, Duncan T, Ward-Johnson D, Davis B, Wilcox S, Friedman DB, Sarzynski MA, Liese AD. The Diet Guidelines: 3 Diets (DG3D) Study protocol of a behavioral teaching kitchen intervention for type-2 diabetes prevention among African American adults. Contemporary Clinical Trials. In press. (https://pubmed.ncbi.nlm.nih.gov/41077220/)
  • Turner-McGrievy GM, Wirth MD, Okpara N, Jones M, Kim Y, Wilcox S, Friedman DB, Sarzynski MA, Liese AD. Similar changes in diet quality indices, but not nutrients, among African American participants randomized to follow one of the three dietary patterns of the US Dietary Guidelines: A secondary analysis. Nutrition Research. 2024 Nov;131:27-38. doi: 10.1016/j.nutres.2024.09.005. (https://pubmed.ncbi.nlm.nih.gov/39366028/)
  • Turner-McGrievy GM, Wilson MJ, Carswell J, Okpara N, Aydin H, Bailey S, Davey M, Hutto B, Wilcox S, Friedman DB, Sarzynski MA, Liese AD. A 12-week randomized intervention comparing the Healthy US, Mediterranean, and Vegetarian dietary patterns of the US Dietary Guidelines for changes in body weight, hemoglobin A1c, blood pressure, and dietary quality among African American adults. Journal of Nutrition. 2023 Feb;153(2):579-587. (https://pubmed.ncbi.nlm.nih.gov/36894249/)
  • Aydin HZ, Okpara N, Dubois KE, Jones MM, Carswell J, Wilcox S, Friedman DB, Liese AD, Turner-McGrievy G. 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. 2025; 17(21):3453. (https://pubmed.ncbi.nlm.nih.gov/41228525/)

Study Benefits

See what other participants have said about participating in our nutrition studies!

Participating in our studies is fun and can be life changing for your health. See what our former participants have said about our studies and working with Dr. Brie and her team.

Meet our nutrition staff and learn more about healthy eating in this segment from News 19 WLTX.

Community Advisory Board

Ashley Page Bookhart

Director of Programs & Rural Outreach, FoodShare South Carolina

Mary Jones, PhD, MPH

Director of Public Health Workforce Development and Adjunct Faculty
USC Arnold School of Public Health

Darrin Thomas

President at Thomas Media Group and Greek Traditions LLC

Contact us

Want to be contacted about other upcoming studies? Fill out this interest form and  someone will be in contact with you.