Whole grain vs. Whole wheat - what's the difference?

In this video, Dr. Weil explains the difference between whole grain and whole wheat, and why one is better than the other.


Andrew Weil, M.D. - What's a Whole Grain? from Andrew Weil, M.D. on Vimeo .

Note: Dr. Weil says that whole wheat is about the same as white bread in terms of how quickly its broken down and absorbed (GI Index). But keep in mind, whole wheat is more nutritious than white bread though.