I know this is the subject of some controversy among my friends, so I'm curious as to people's thoughts on this.

Are Humans Carnivores or Herbivores?

Comparative Anatomy

Many of the comments to the first article linked are very insightful... pay special attention to Erich Schwarz, who gives several links to research in this area (which I'm not going to bother to include here), and the comments of Joel D., farther down.

And these links:

Humans are Omnivores

Contrary Facts vs. Vegan Dogma

Then, of course, there's the better-for-the-environment argument:

Diet for a New America

These look like pretty good resources, as well, although they're a bit long, and I'm putting them here because they're relevant, and it'll be easier for me to find them later. :)

PaleoDiet

The Naive Vegetarian

A few of the articles, when talking about the relative health of eating vs. not eating meat make a reference to wheat and other carbs, but not in much depth (probably because it wasn't the scope of the article). Having finally gotten around to reading Sugar Blues, I can't help but think that this is also a huge factor in the problem with most diets. (If you haven't read it, the book is rather militant, but it makes some interesting points.)

( My Personal Thoughts )