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. 2023 Apr;62(3):1377-1387.
doi: 10.1007/s00394-022-03078-5. Epub 2022 Dec 27.

Associations of healthy dietary patterns with mortality among people with prediabetes

Lin Li  1 , Zhenzhen Wan  1 , Tingting Geng  1   2 , Qi Lu  1 , Kai Zhu  1 , Zixin Qiu  1 , Xuena Zhang  1 , Yujie Liu  1 , Qingying Tian  1 , Liegang Liu  1 , An Pan  2 , Zhilei Shan  3 , Gang Liu  4
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Associations of healthy dietary patterns with mortality among people with prediabetes

Lin Li et al. Eur J Nutr. 2023 Apr.

Abstract

Purpose: To examine the associations of healthy dietary patterns with cardiometabolic biomarkers and all-cause mortality among individuals with prediabetes.

Methods: This cohort study included 8363 adults with prediabetes from the National Health and Nutrition Examination Survey 1999-2014. Healthy dietary patterns including Alternate Healthy Eating Index-2010 (AHEI-2010), Alternate Mediterranean Diet score (AMED), Dietary Approaches to Stop Hypertension score (DASH), and Healthy Eating Index-2015 (HEI-2015) were calculated based on 24-h dietary recall data. Mortality status was obtained by linkage to National Death Index records. Cardiometabolic biomarkers, including blood glucose, insulin, HbA1c, C-reactive protein (CRP), and lipids, were measured at recruitment.

Results: During 61,991 person-years of follow-up, 991 deaths occurred. Comparing the extreme quartiles, the multivariable-adjusted hazard ratios (HRs) and 95% confidence intervals (CIs) for all-cause mortality were 0.65 (0.49, 0.85) for AHEI-2010 (P-trend = 0.002), 0.68 (0.50, 0.92) for AMED (P-trend = 0.004), 0.72 (0.53, 0.98) for DASH (P-trend = 0.03), and 0.78 (0.58, 1.05) for HEI-2015 (P-trend = 0.08). Besides, the HRs (95% CIs) for all-cause mortality per 20-percentile increment in scores were 0.78 (0.67, 0.90) for AHEI-2010 (P = 0.001), 0.73 (0.62, 0.86) for AMED (P < 0.001), 0.84 (0.69, 1.02) for DASH (P = 0.08), and 0.86 (0.74, 1.00) for HEI-2015 (P = 0.04). In addition, higher dietary scores were associated with favorable blood glucose, insulin, HOMA-IR, blood lipids, and CRP (all P-trend < 0.05). The high-density lipoprotein cholesterol and CRP explained 1.53-9.21% of the associations between dietary patterns and all-cause mortality (P < 0.05).

Conclusions: Diets with higher AHEI-2010, AMED, DASH, and HEI-2015 were associated with improved cardiometabolic factors and lower all-cause mortality among individuals with prediabetes. These findings suggest that multiple healthy dietary patterns instead of a one-size-fits-all diet plan might be beneficial and acceptable for individuals with prediabetes.

Keywords: AHEI-2010; AMED; DASH; HEI-2015; Mortality; Prediabetes.

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