Vegetarian diets have reportedly been around since as early as 700 B.C.
Several types exist and individuals may practice them for a variety of reasons, including health, ethics, environmentalism and religion.
Vegan diets are a little more recent, but are getting a good amount of press.
This article takes a look at the similarities and differences between these two diets.
It also discusses how they affect your health and the environment.
Click here to read more.