To quote the relevant part:
"All of the data, including diet information, is self-reported. Thus, we have no idea precisely what vegetarians or the various meat-consuming groups were actually eating. The data is also cross-sectional. "Therefore, no statements can be made whether the poorer health in vegetarians in our study is caused by their dietary habit or if they consume this form of diet due to their poorer health status," the authors admit. Moreover, the study was based in Austria, and the Austrian diet and lifestyle significantly differs from the American diet and lifestyle.
Even if the study wasn't severely limited, it wouldn't be enough to overturn prior evidence. In a 2009 review, the Academy of Nutrition and Dietetics (formerly the American Dietetic Association), the largest organization of food and nutrition professionals in the U.S., declared that "appropriately planned vegetarian diets, including total vegetarian or vegan diets, are healthful, nutritionally adequate, and may provide health benefits in the prevention and treatment of certain diseases." More recently, a 2012 review published in the journal Public Health Nutrition, found that vegetarian diets have not shown any adverse effects on health.
"
To quote the relevant part: "All of the data, including diet information, is self-reported. Thus, we have no idea precisely what vegetarians or the various meat-consuming groups were actually eating. The data is also cross-sectional. "Therefore, no statements can be made whether the poorer health in vegetarians in our study is caused by their dietary habit or if they consume this form of diet due to their poorer health status," the authors admit. Moreover, the study was based in Austria, and the Austrian diet and lifestyle significantly differs from the American diet and lifestyle.
Even if the study wasn't severely limited, it wouldn't be enough to overturn prior evidence. In a 2009 review, the Academy of Nutrition and Dietetics (formerly the American Dietetic Association), the largest organization of food and nutrition professionals in the U.S., declared that "appropriately planned vegetarian diets, including total vegetarian or vegan diets, are healthful, nutritionally adequate, and may provide health benefits in the prevention and treatment of certain diseases." More recently, a 2012 review published in the journal Public Health Nutrition, found that vegetarian diets have not shown any adverse effects on health. "