I’ve never seen a better, more succinct Q&A on what a good diet means, so I’m sharing this one:
I feel smarter, but what happens when new information comes out, like, tomorrow? How can I stay up to date? It seems like the conventional wisdom on healthy diets changes all the time.
It doesn’t, and the definition of a healthy diet has been clear for some time. In fact, the basic theme of optimal eating — a diet made up mostly of whole, wholesome plant foods — has been clear to nutrition experts for generations. What doeschange all the time is the fads, fashions, marketing gimmicks, and hucksterism. How do you avoid the pitfalls of all that? Focus on foods, not nutrients. A diet may be higher or lower in total fat, or total carbohydrate, or total protein, and still be optimal. But a diet cannot be optimal if it is not made up mostly of some balanced combination of vegetables, fruits, whole grains, beans, legumes, nuts, seeds, and water. If you get the foods right, the nutrients sort themselves out. But if you focus on nutrients rather than foods, you quickly learn that there is more than one way to eat badly, and we Americans seem all too eager to try them all.
See also their follow-up with some helpful clarifications and more answers!