More lessons are to be learned from the French culture. They just keep giving and we (the U.S) just keep ignoring their clues reflected by their lower disease rates (some of the lowest on the globe).
For example, the cardiovascular disease rate: 86.89 deaths in U.S per 100,000 population; 43.25 in France. The obesity rates are much higher in the U.S. than in France. However the lower rates are climbing in France due to less adherence to their traditional diets and their higher intake of Westernized fast and processed foods.
The dietary lessons are relatively simple suggestions(in my opinion). The French generally do not diet or snack. They enjoy food and eat sensibly when it comes to portions. There may be others that are more complex. Please check out the table and graph in the article.