Although I am indeed skeptical about the science, it sounds like the overall eating plan he's recommending is pretty much the consensus healthy diet: eat lots of fruits and vegetables, whole grains, and legumes; avoid empty calories and overly refined food.

I'm particularly warning you about the nuts because I'm susceptible to them. I think nuts are very good for you (me) in moderation, but I find it all too easy to overeat them, especially when I'm dieting. I could easily wolf down an entire package of those wonderful Trader Joe's pecans at a sitting (and nothing that you say is going to convince me that eating 1000 calories worth of nuts per day will have no effect on weight loss). I even went so far as to divide one of the packages into 1-oz servings and only allow myself to open one every 2 days. You may not be such a nut glutton; I'm probably just projecting.