Veganism 6 Health arguments Further information: Vegan nutrition and Raw veganism People on diets which include animal-based food have been shown to be more likely to have degenerative diseases, including heart disease. According to the 2010 Dietary Guidelines for Americans, a report issued by the U.S. Department of Agriculture and the U.S. Department of Health and Human Services, a vegetarian diet is associated with lower levels of obesity and reduced risk of cardiovascular disease. According to the EPIC-Oxford study, vegetarian diets provide large amounts of cereals, pulses, nuts, fruits, and vegetables, which makes them rich in carbohydrates, omega-6 fatty acids, dietary fiber, carotenoids, folic acid, vitamin C, vitamin E, and magnesium. The vegan diet is more restricted, and recommendations differ. Poorly planned vegan diets may be low in vitamin B12, calcium, omega-3 fatty acids, vitamin D, iron, zinc, riboflavin (vitamin B2), and iodine. The American Dietetic Association and Dietitians of Canada said in 2003 that properly planned vegan diets were nutritionally adequate for all stages of life, including pregnancy and lactation, and provided health benefits in the treatment and prevention of certain diseases. The Swiss Federal Nutrition Commission and the German Society for Nutrition do not recommend a vegan diet, and caution against it for children, the pregnant, and the elderly. Physicians John A. McDougall, Caldwell Esselstyn, Neal D. Barnard, Dean Ornish, Michael Greger, and nutritional biochemist T. Colin Campbell, argue that high animal fat and protein diets, such as the standard American diet, are detrimental to health, and that a low-fat vegan diet can both prevent and reverse degenerative diseases such as coronary artery disease and diabetes. A 2006 study by Barnard found that in people with type 2 diabetes, a low-fat vegan diet reduced weight, total cholesterol, and LDL cholesterol, and did so to a greater extent than  the diet prescribed by the American Diabetes Association.vegan diet may A Dean Ornish is one of a number of physicians who recommend a low-fat vegan diet to The 12-year Oxford Vegetarian Study of 11,000 providerecruited subjects certain between 1980 and 1984 indicated that vegans had lower benefits, prevent and reverse certain degenerative health total- and  diseases. LDL-cholesterol concentrations than did meat-eaters.such as a reduction Death rates were in coronary artery lower in non-meat eaters than in meat eaters; mortality from ischemic disease and heart disease was positively associated with eating animal fat and with dietary cholesterol levels. The study also diabetes. suggested that vegans in the UK may be at risk of iodine deficiency because of deficiencies in the soil. According to the American Dietetic Association and Dietitians of Canada, diets that avoid meat tend to have lower levels of saturated fat, cholesterol, and animal protein, and higher levels of carbohydrates, fiber, magnesium, potassium, folate, and antioxidants, such as vitamins C and E, and phytochemicals. People avoiding meat are reported to have lower body mass index than those following the average Canadian or American diet. From this Vegan version of the nutritional food pyramid (click to enlarge). follows lower death rates from ischemic heart disease, lower blood cholesterol levels, lower blood pressure, and lower rates of hypertension, type 2 diabetes, and prostate and colon cancers.