Dr. Fuhrman is preaching a satisfyingly logical regimen--maximize nutrition in a minimum number of calories, and health will follow. Dr. Roy Wolford, the gerontologist, in his_120 Year Diet_ said it with more elan, and more research to back it up, but Fuhrman's program is simpler and easier to follow.
While I thought I'd have trouble adjusting to this way of eating, after only a couple of initial hungry days, I now feel quite satisfied, and have already lost 11 lbs. in two weeks.
The book itself is an easy, snappy read, although many of the snippets of nutrition research favoring veganism seem to be from the Physicians Committee for Responsible Medicine info sheets!