The Optimal Macronutrient Intake Trial for Heart Health (OmniHeart) study compared the effects of three heart-healthy diets, all based on the Dietary Approaches to Stop Hypertension (DASH) diet — one emphasized carbohydrates, another emphasized protein, and the third emphasized unsaturated fat. Although all three lowered blood pressure and improved cholesterol and triglyceride levels, the higher-protein and higher-unsaturated-fat diets worked best.
The general plan for all three diets looked like this:
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