In the United States, approximately 70 percent of our caloric consumption derives from plant-based sources, most of which are grains, vegetable oils, and sugar-based foods. Further removal of animal nutrition doesn’t lead more people to eat kale; instead, they seek out other forms of concentrated calories, such as vegetable oils, sugars, and refined grains. Our health has only worsened as our consumption of animal products has declined since the 1970s.
