Key result
Global diet-related IHD mortality in young adults falls ~0.5% annually.
Why the study?
Ischemic heart disease imposes a growing global burden on young adults, for whom dietary factors represent a prominent and feasible preventive target.
Dietary risks, particularly low whole grain intake and increasing sugar-sweetened beverage consumption, contribute significantly to the global burden of ischemic heart disease in young adults, highlighting the need for targeted nutritional interventions.
Answers are grounded in this paper and cite their sources.
Declines support dietary monitoring in young adults; extends GBD estimates but leaves open causal confirmation and trials.
Background Ischemic heart disease (IHD) is imposing a growing global burden on young adults, for whom dietary factors are a prominent and feasible preventive target. This study investigated the global burden and trends of IHD attributable to dietary risks among young adults from 1990 to 2021, with projections to 2031. Methods Data for this study, sourced from Global Burden of Disease (GBD) 2021, comprehensively analyzed the burden of ischemic heart disease (IHD) due to dietary factors in young adults. Temporal trends were evaluated using estimated annual percentage changes (EAPCs), while future trends were projected using an Auto-Regressive Integrated Moving Average (ARIMA) model. Results Globally in 2021, the dietary-related IHD mortality and DALYs rates among young adults were 9.48 (95% UI: −1.54 to 13.41) and 465.57 (95% UI: −78.20 to 658.72) respectively, with males bearing a heavier burden than females. From 1990 to 2021, both mortality and DALYs rates demonstrated consistent declines. The low-middle SDI region and Eastern Europe exhibited the highest IHD burden among the five SDI regions and 21 GBD regions, respectively. Diet low in whole grains was identified as the leading dietary risk factor for IHD burden, whereas high consumption of sugar-sweetened beverages remained the only dietary risk factor demonstrating an upward trend. Projections suggest that by 2031, the global dietary-related IHD mortality rate among young adults will decrease by 4.58%, while the DALYs rate is expected to increase by 0.34%. Conclusion This finding underscores the critical need for targeted dietary interventions aimed at reducing IHD risk, particularly among young adults on a global scale.
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Liang et al. (2026) studied Young adults aged 25-49 years with ischemic heart disease attributable to dietary risks. Dietary risk factor modification vs. No modification or previous time periods was evaluated on Mortality rate and disability-adjusted life years (DALYs) rate of ischemic heart disease attributable to dietary risks per 100,000 person-years in young adults aged 25-49 (EAPC -0.49 for mortality rate; EAPC -0.51 for DALYs rate, 95% CI Mortality rate 95% UI: -1.54 to 13.41; DALYs rate 95% UI: -78.20 to 658.72; EAPC mortality 95% CI: -0.61 to -0.37; EAPC DALYs 95% CI: -0.62 to -0.39). Dietary risks contributed to a global decline in ischemic heart disease mortality rate by 0.49% annually, decreasing mortality from 10.23 to 9.48 per 100,000 in young adults aged 25-49 between 1990 and 2021.
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