Yi Wan1, Fred K Tabung1,2, Dong Hoon Lee1, Teresa T Fung1,3, Walter C Willett1,4,5, Edward L Giovannucci1,4,5. 1. Department of Nutrition, Harvard T.H. Chan School of Public Health, Boston, MA. 2. Division of Medical Oncology, Department of Internal Medicine, The Ohio State University College of Medicine, Columbus, OH. 3. Department of Nutrition, Simmons University, Boston, MA. 4. Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, MA. 5. Channing Division of Network Medicine, Department of Medicine, Brigham and Women's Hospital, Boston, MA.
Abstract
OBJECTIVE: Insulin response is related to overall health. Diet modulates insulin response. We investigated whether insulinemic potential of diet is associated with risk of all-cause and cause-specific mortality. RESEARCH DESIGN AND METHODS: We prospectively followed 63,464 women from the Nurses' Health Study (1986-2016) and 42,880 men from the Health Professionals Follow-up Study (1986-2016). Diet was assessed by food frequency questionnaires every 4 years. The insulinemic potential of diet was evaluated using a food-based empirical dietary index for hyperinsulinemia (EDIH), which was predefined based on predicting circulating C-peptide concentrations. RESULTS: During 2,792,550 person-years of follow-up, 38,329 deaths occurred. In the pooled multivariable-adjusted analyses, a higher dietary insulinemic potential was associated with an increased risk of mortality from all-cause (hazard ratio [HR] comparing extreme quintiles: 1.33; 95% CI 1.29, 1.38; P-trend <0.001), cardiovascular disease (CVD) (HR 1.37; 95% CI 1.27, 1.46; P-trend <0.001), and cancers (HR 1.20; 95% CI 1.13, 1.28; P-trend <0.001). These associations were independent of BMI and remained significant after further adjustment for other well-known dietary indices. Furthermore, compared with participants whose EDIH scores were stable over an 8-year period, those with the greatest increases had a higher subsequent risk of all-cause (HR 1.13; 95% CI 1.09, 1.18; P-trend <0.001) and CVD (HR 1.10; 95% CI 1.01, 1.21; P-trend = 0.006) mortality. CONCLUSIONS: Higher insulinemic potential of diet was associated with increased risk of all-cause, CVD, and cancer mortality. Adopting a diet with low insulinemic potential might be an effective approach to improve overall health and prevent premature death.
OBJECTIVE: Insulin response is related to overall health. Diet modulates insulin response. We investigated whether insulinemic potential of diet is associated with risk of all-cause and cause-specific mortality. RESEARCH DESIGN AND METHODS: We prospectively followed 63,464 women from the Nurses' Health Study (1986-2016) and 42,880 men from the Health Professionals Follow-up Study (1986-2016). Diet was assessed by food frequency questionnaires every 4 years. The insulinemic potential of diet was evaluated using a food-based empirical dietary index for hyperinsulinemia (EDIH), which was predefined based on predicting circulating C-peptide concentrations. RESULTS: During 2,792,550 person-years of follow-up, 38,329 deaths occurred. In the pooled multivariable-adjusted analyses, a higher dietary insulinemic potential was associated with an increased risk of mortality from all-cause (hazard ratio [HR] comparing extreme quintiles: 1.33; 95% CI 1.29, 1.38; P-trend <0.001), cardiovascular disease (CVD) (HR 1.37; 95% CI 1.27, 1.46; P-trend <0.001), and cancers (HR 1.20; 95% CI 1.13, 1.28; P-trend <0.001). These associations were independent of BMI and remained significant after further adjustment for other well-known dietary indices. Furthermore, compared with participants whose EDIH scores were stable over an 8-year period, those with the greatest increases had a higher subsequent risk of all-cause (HR 1.13; 95% CI 1.09, 1.18; P-trend <0.001) and CVD (HR 1.10; 95% CI 1.01, 1.21; P-trend = 0.006) mortality. CONCLUSIONS: Higher insulinemic potential of diet was associated with increased risk of all-cause, CVD, and cancer mortality. Adopting a diet with low insulinemic potential might be an effective approach to improve overall health and prevent premature death.
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