The new design prioritized protein, healthy fats, and whole foods. At the same time, it pushed whole grains, ultra-processed food, and sugar to the bottom. The old food pyramid, which dated back to the 1990s, had grains and cereals on the bottom, fruits and vegetables in the middle, and dairy and meat products near the top, with fats and sugars.

In a historic shift in the country’s nutritional policies, Health Secretary Robert F. Kennedy Jr. has introduced a new set of dietary guidelines, essentially turning the existing food pyramid on its h...