| http://www.w3.org/ns/prov#value | - risk, and it did so using the most rigorous methods.</p><p>Scientists randomly assigned 7,447 people in Spain who were overweight, were smokers, or had diabetes or other risk factors for heart disease to follow the Mediterranean diet or a low-fat one.</p><p>Low-fat diets have not been shown in any rigorous way to be helpful, and they are also very hard for patients t
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