Abstract B100: Using a plant-based diet and exercise to improve outcomes in African American postmenopausal breast and endometrial cancer survivors

Abstract

Abstract Background: Obese postmenopausal African American (AA) women with breast and endometrial cancer are at increased risk of recurrence. Obesity and aging have been associated with changes in the gut microbiota. Plant-based diets, such as soy isoflavone consumption may protect against breast and endometrial cancer. Methods: A mixed-methods, lifestyle intervention study was conducted to evaluate adoption of a whole-food plant-based diet, physical activity, and changes in risk for breast and endometrial cancer among obese, post-menopausal AA women. We examined acceptability and feasibility of adopting a whole-food, plant-based diet and the effect of the diet on reductions in weight, adiposity, inflammation, circulating estrogen, and gut microbiome profile. Results: In 5 focus group discussions, 20 AA women described their knowledge of breast and endometrial cancer risk factors, attitude toward a plant-based diet, experience with making lifestyle changes, and preferences for plant-based alternatives to traditional meat-based meals. This feedback was used to tailor the 4-weeks of plant-based produce boxes provided to the women. Women report being pleased with the food selections; document adherence to the meals and physical activity with food and exercise tracking. Gut microbiome analysis is underway. Conclusion: This study addresses knowledge gaps in breast and endometrial cancer risk and behavioral modifications affecting risk among an obese, post-menopausal AA female population. The long-term goal of this program of research will shed light on the mechanisms involved in the gut microbiome and the contributions of changes to these systems on declining health. Citation Format: Desiree A. Rivers, Regina Leonis, Zakirah A. Abdul-Hameed, Shaliesh A. Singh, Brian A. Rivers. Using a plant-based diet and exercise to improve outcomes in African American postmenopausal breast and endometrial cancer survivors [abstract]. In: Proceedings of the 16th AACR Conference on the Science of Cancer Health Disparities in Racial/Ethnic Minorities and the Medically Underserved; 2023 Sep 29-Oct 2;Orlando, FL. Philadelphia (PA): AACR; Cancer Epidemiol Biomarkers Prev 2023;32(12 Suppl):Abstract nr B100.