The concept of “food as medicine” is deeply rooted in healing traditions around the world. Medicines themselves have been derived from a variety of plants and animals — including herbs, roots, barks, and bones. In recent decades, food elimination diets have become part of the treatment plan for many illnesses. Today, about half of all American adults have at least one preventable chronic disease related to poor dietary habits and physical inactivity. This means food isn’t only an important aspect of treating illness, but preventing it.