Seems simple enough to get the right foods. Ask your doctor or your pharmacy. Right? Or get an official government report. That will tell you surely? After all, the US National Institutes of Health (NIH) and Department of Agriculture (USDA) have hundreds of scientists working to formulate Dietary Guidelines for Americans, and they spend multi-millions of our tax dollars each year on this work. To quote the US Government, these guidelines are, the cornerstone of Federal nutrition policy.