Most vegetarian diets are low in or devoid of animal products and are usually lower than non-vegetarian diets in total fat, saturated fat and cholesterol. Studies have shown that vegetarians seem to have a lower risk of obesity, coronary heart disease, high blood pressure, diabetes mellitus and some forms of cancer. The American Heart Association recommends a vegetarian diet should include a wide variety of foods and enough calories to meet energy needs. Choose whole or unrefined grain products. Use a variety of fruits and vegetables, including foods that are good sources of vitamins A and C. If you use dairy products, choose fat-free/nonfat and low-fat varieties. Keep intake of sweets and fatty foods to a minimum.