Your mother is considering changing her diet to include only non-meat proteins to reduce her risk of developing heart disease or cancer. what evidence is available to support her decision? vegetarian diets contain greater amounts of heart-protective omega-3 fatty acids plant-based diets are usually lower in saturated fat and higher in fiber, which reduces risk of heart disease substituting soy for meat proteins has resulted in a large decrease in heart disease risk lung cancer appears less frequently in people eating plant-based diets