Mixed
Consuming 10 g/day more of total dietary fiber is associated with a 14% lower risk of coronary heart disease events and a 27% lower risk of coronary death.
To lower your risk of heart disease, aim to increase your daily dietary fiber intake by about 10 grams. Focus specifically on fiber from cereals (grains) and fruits, as these sources showed the strongest protective effects. Vegetable fiber did not show the same benefit, possibly because starchy vegetables like corn and peas have a high glycemic load that might counteract the fiber's benefits. Simply adding more whole grains and fruits to your diet is a practical step supported by this large-scale analysis.
each 10-g/d increment of energy-adjusted and measurement error–corrected total dietary fiber was associated with a 14% (relative risk [RR], 0.86; 95% confidence interval [CI], 0.78-0.96) decrease in risk of all coronary events and a 27% (RR, 0.73; 95% CI, 0.61-0.87) decrease in risk of coronary death.
Why this rating
Large pooled analysis of 10 prospective cohort studies with measurement error correction, though observational design limits causal certainty.
Source
Dietary Fiber and Risk of Coronary Heart Disease
Mark A. Pereira et al. · Archives of Internal Medicine · 2004
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