Like, eating a little meat isn’t going to kill you, though it might be better approached as a side dish rather than as a main.  And you’re better off eating whole fresh foods rather than processed food products.  That’s what I mean by the recommendation to ‘eat food,’ which is not quite as simple as it sounds.  For while it used to be that food was all you could eat, today there are thousands of other edible foodlike substances in the supermarket.

-Michael Pollan, In Defense of Food