Nanny nutritionist Carrie Latt told NBC's Later Today that the restaurant industry was largely to blame for the so-called obesity epidemic. "They could feed Third World countries with the portions we get in restaurants. I mean it's seriously out of control. What's interesting is, calories are on the rise, where fat grams have come down. But we're still obese, and it's getting worse and worse every day. A lot of it is the restaurant industry, to be quite honest." Read excerpts from Latt's latest book, "Portion Savvy."