Vegan means not consuming any animal products at all. (foodie-ness.com)
At the other end of the food spectrum, a large segment of the world's people are consuming animal products at a level that is unhealthy and contributing to obesity and cardiovascular disease. (insteading.com)
As it turns out, however, it is completely possible to get all of the protein that you need without consuming animal products. (thepreppyvegan.com)