The government of the United States launched an official website, realfood.gov, to introduce the new Pyramid of Diet as the following. First, whole food Proteins & Healthy Fat. Second, Vegetables & Fruits that prioritizing freshness and minimal processing. Third, fiber-rich whole grains and significantly reduce the highly processed and refined carbohydrates.
In fact, above principles have been widely spreading for years, but this not only simplifies MyPlatesince 2011 but also provided an update version.
However, I believe that many “unhealthy” food exist for some reasons and possess their own functionalities. For example, when you want an occasional cognitive strength boost, processed carbs and sugar-added products should work well. Similarly, if your digestion is too weak, you may want to avoid from fibers temporarily. Don’t strictly follow, just eat smart.