We got Eat This, Not That and Eat This, Not That for Kids and I can't tell you how many conversations these books have started. My kids have really gotten into it. They take them along when we go out and they're making healthier choices. The books do an especially good job of pointing out how foods labeled "healthy" or "diet or "natural" aren't necessarily so. The books are really engaging, and I highly recommend this as a painless way to discuss nutrition and health.
This is their website.
This is their website.









I just really like how it exposes the "tricks" the food and restaurant industries use to try to get you to think you're making healthy choices.