1058-P: The 2018 World Cancer Research Fund (WCRF) and American Institute for Cancer Research (AICR) Score and Diabetes Risk in the Diabetes Prevention Program Outcomes Study (DPPOS)

Abstract

Lifestyle changes may reduce the burdens of diabetes and cancer. We examined how changes in the 2018 WCRF/AICR Score, reflecting key cancer prevention recommendations, are associated with diabetes risk. The Diabetes Prevention Program (DPP) randomized adults with prediabetes to a lifestyle intervention (ILS), metformin (MET), or placebo (PLB) for a mean of 3.2 years, with follow-up in DPPOS for 11 years. The Score includes 7 components: weight, physical activity, plant-based diet, red/processed meat, sugar-sweetened drinks, fast foods, and alcohol (0-7 points, with 7 as the best total score). Scores were estimated at years 0, 1, 5, 6, 9, and 15 for participants with complete baseline data (N = 3,147). Covariates included sex, age, race/ethnicity, marital status, education, family history of diabetes, hormone therapy (females), and energy intake. Adjusted hazard ratios (HRs) and 95% confidence intervals (CIs) stratified by treatment group estimated the association of Score changes with diabetes risk in DPP and DPPOS within and between groups. There were significant Score improvements within all groups over 15 years (p < 0.001); the differences between groups were only significant after 1 year (p < 0.001; 15 years: p = 0.137). For every 1-unit improvement in Score during DPP, there was a 29% and 16% lower diabetes risk in ILS (95% CI: 0.58 - 0.88) and PLB (95% CI: 0.72 - 0.99), respectively, and no significant association in MET. The time-dependent Score improvements in ILS and PLB were significantly associated with lower diabetes risk through year 15 (ILS HR: 0.86, 95% CI 0.77 - 0.96; PLB HR: 0.85, 95% CI 0.76 - 0.95). Changes in weight, physical activity, and plant-based diet appeared to be drivers of the Score’s effect. Findings suggest that Score improvements are associated with a long-term, lower risk for diabetes among adults with prediabetes. Future research can explore how this risk reduction impacts cancer risk. Disclosure M. M. M. Shams-white: None. B. M. Heckman-stoddard: None. D. Research group: None. A. H. Tjaden: None. S. Edelstein: None. S. Bassiouni: None. C. Kim: None. X. Pi-sunyer: None. K. A. Temple: None. E. M. Venditti: None. J. Reedy: None. Funding National Institute of Diabetes and Digestive and Kidney Diseases (U01DK048489)