According to this article, the US Government is issuing new dietary guidelines that state the obvious; exercise 30-90 minutes a day and eat moderate amounts of food. In addition, eat more fruit and vegatables and less meat. From what I've seen in restaurants, the main issue is that people eat portions that are way too big. For example, in many Dallas restaurants, if you order lunch with dessert, you get enough food for about three people. It's no surprise that Dallas is one of the top three fattest cities in the US. In Europe, a typical serving is at least 50% less than in the US, and people tend to walk a lot more during an average day. Most portion guides that I've seen specify servings in terms of cups, ounces, and spoons, which is hard for people to process. I think that showing actual pictures of reasonable servings in restaurants, as well as actually serving healthy portion sizes, would make it far easier for people to realize how much they overeat. It would be pretty funny if waiters in Dallas restaurants asked "Sir, would you prefer to eat enough lunch for one, two or three people?"