Background Population-based studies generally show neutral associations between dairy consumption and ischemic heart disease (IHD) mortality, whereas weak inverse associations were found for cardiovascular disease (CVD) and stroke mortality. Whether dairy consumption affects long-term survival after myocardial infarction (MI) is unknown. Objectives We studied types of dairy and long-term mortality risk in drug-treated post-MI patients. Methods We included 4365 Dutch patients from the Alpha Omega Cohort aged 60–80 y (21% women) with an MI ≤10 y before enrollment. Dietary data were collected at baseline (2002–2006) using a 203-item FFQ and patients were followed for cause-specific mortality through December 2018. HRs of CVD, IHD, stroke, and all-cause mortality for types of dairy were obtained from Cox models, adjusting for age, sex, energy intake, physical activity, smoking, alcohol intake, diabetes, obesity, and dietary factors. Results Most patients were Dutch, 24% were obese, 20% had diabetes, and 97% used cardiovascular medication. Median intakes were 39 g/d for plain yogurt, 88 g/d for total nonfermented milk, and 17 g/d for hard cheeses. Of the cohort, 10% consumed high-fat milk. During ∼12 y of follow-up (48,473 person-years) 2035 deaths occurred, including 903 from CVD, 558 from IHD, and 170 from stroke. Yogurt was linearly inversely associated with CVD mortality (HR: 0.96; 95% CI: 0.93, 0.99; per 25 g/d) and nonlinearly inversely associated with all-cause mortality. Milk was not associated with any of the outcomes (HRs: ∼1.0 per 100 g/d), except for a higher mortality risk in high-fat milk consumers (HR: 1.30; 95% CI: 1.13, 1.49). Other dairy groups were not associated with mortality risk. Conclusions In Dutch post-MI patients, yogurt consumption was inversely associated with CVD mortality and all-cause mortality. Associations for milk and other dairy products were neutral or inconsistent. This trial was registered at clinicaltrials.gov as NCT03192410.
Purpose Whether beverage quality affects changes in glycaemic traits and type 2 diabetes (T2D) risk is unknown. We examined associations of a previously developed Healthy Beverage Index (HBI) with insulin resistance, and risk of prediabetes and T2D. Methods We included 6769 participants (59% female, 62.0 ± 7.8 years) from the Rotterdam Study cohort free of diabetes at baseline. Diet was assessed using food-frequency questionnaires at baseline. The HBI included 10 components (energy from beverages, meeting fluid requirements, water, coffee and tea, low-fat milk, diet drinks, juices, alcohol, full-fat milk, and sugar-sweetened beverages), with a total score ranging from 0 to 100. A higher score represents a healthier beverage pattern. Data on study outcomes were available from 1993 to 2015. Multivariable linear mixed models and Cox proportional-hazards regression models were used to examine associations of the HBI (per 10 points increment) with two measurements of HOMA-IR (a proxy for insulin resistance), and risk of prediabetes and T2D. Results During follow-up, we documented 1139 prediabetes and 784 T2D cases. Mean ± SD of the HBI was 66.8 ± 14.4. Higher HBI score was not associated with HOMA-IR (β: 0.003; 95% CI − 0.007, 0.014), or with risk of prediabetes (HR: 1.01; 95% CI 0.97, 1.06), or T2D (HR: 1.01; 95% CI 0.96, 1.07). Conclusion Our findings suggest no major role for overall beverage intake quality assessed with the HBI in insulin resistance, prediabetes and T2D incidence. The HBI may not be an adequate tool to assess beverage intake quality in our population.
Population-based studies suggest a role for dairy, especially yogurt, in the prevention of type 2 diabetes (T2D). Whether dairy affects T2D risk after myocardial infarction (MI) is unknown. We examined associations of (types of) dairy with T2D incidence in drug-treated, post-MI patients from the Alpha Omega Cohort. The analysis included 3401 patients (80% men) aged 60–80 y who were free of T2D at baseline (2002–2006). Dairy intakes were assessed using a validated food-frequency questionnaire. Incident T2D was ascertained through self-reported physician diagnosis and/or medication use. Multivariable Cox models were used to calculate Hazard ratios (HRs) and 95% confidence intervals (CI) for T2D with dairy intake in categories and per 1-standard deviation (SD) increment. Most patients consumed dairy, and median intakes were 264 g/d for total dairy, 82 g/d for milk and 41 g/d for yogurt. During 40 months of follow-up (10,714 person-years), 186 patients developed T2D. After adjustment for confounders, including diet, HRs per 1-SD were 1.06 (95% CI 0.91–1.22) for total dairy, 1.02 (0.88–1.18) for milk and 1.04 (0.90–1.20) for yogurt. Associations were also absent for other dairy types and in dairy categories (all p-trend > 0.05). Our findings suggest no major role for dairy consumption in T2D prevention after MI.
Introduction: Dairy consumption, especially yogurt, and circulating biomarkers of dairy fat (odd chain fatty acids, OCFAs), have been associated with a lower risk of type 2 diabetes (T2D) in population-based studies. Whether these associations are also present in post-myocardial infarction (MI) patients is unknown. Hypothesis: We hypothesized that dairy consumption and circulating OCFAs (pentadecanoic [15:0] plus heptadecanoic acid [17:0]) may be inversely associated with incident T2D after MI. Methods: We included 3347 Dutch post-MI patients from the Alpha Omega Cohort, who were initially free of T2D. At baseline (2002-2006), dairy consumption was estimated with a 203-item food frequency questionnaire and plasma OCFAs were measured in cholesteryl esters using gas chromatography. Incident T2D was ascertained through self-reported physician diagnosis and medication use. Multivariable Cox models were used to obtain hazard ratios (HRs) and 95% confidence intervals (CI) for incident T2D and dairy types and OCFAs (per 1 standard deviation (SD) increment). Results: At baseline, patients were on average 68.9 years old (± 5.5 SD), 80% were men and 87% used statins (2684 and 2908 of 3347 patients respectively). During a median follow-up time of 40 months (10,550 person-years), 181 patients developed T2D. Almost all patients consumed dairy (3300 of 3347), with a median intake of 273 g/d for total dairy. After multivariable adjustment, dairy and its subtypes consumption was not associated with T2D incidence, with HRs ranging from 1.01 to 1.07 per 1-SD increment (all p> 0.05). When analysed in categories (highest vs lowest intake), HRs (95% CI) were 1.05 (0.73-1.52) for milk and 1.08 (0.77-1.51) for yoghurt intake. In line with these findings, no significant association was found for circulating OCFAs 0.97 (0.83-1.12)( Figure 1 ). Conclusion: Dairy consumption, based on self-report and plasma biomarkers, was neutrally associated with T2D incidence in a population of Dutch post-MI patients with a relatively high habitual dairy intake.
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