Food Pyramid Home>Nutrition>Dietary_Options>Food Pyramid   Vegetarian              Web Pages PCRM Article discussing possible changes to the popular American Food Guide Pyramid by the FDA and role it has had in the consumers diet. Garden and Hearth: Nutrition Resources Has graph of standard food pyramid from the USDA. Food Guide Pyramid Explanation of the USDA food pyramid and how to use it as a general guide for making healthy food choices. Modified Food Pyramid for Mature (70+) Adults Scientists at Tufts University have developed a food pyramid designed specifically for older adults.