Fair workers at a vegetarian stand sell meatless items at the "Bio" (organic food) section of the International Green Week Food and Agriculture Fair in Berlin in 2011. Germany's minister of agriculture has called for a ban on using meaty words like "schnitzel" and "würst" to market such products.
John MacDougall/AFP/Getty Images
A meta-analysis found that people on vegetarian diets lost around 4.4 pounds more than the control group (who had no change in diet), while those who went vegan dropped 5.5 pounds more.
Marcus Butt/Ikon Images/Corbis
Mixed martial arts fighter Cornell Ward (from left), chef Daniel Strong, triathlete Dominic Thompson, lifestyle blogger Joshua Katcher and competitive bodybuilder Giacomo Marchese at a vegan barbecue in Brooklyn, N.Y.
Courtesy of James Koroni
An animal's ranking on the food chain depends on where its meals place on the ladder. That puts plants on the bottom (they make all their food), polar bears on top and people somewhere between pigs and anchovies.
Lisa Brown for NPR