How much of our daily caloric intake comes from ingesting substances that, technically speaking, do not meet traditional definitions of “food”? Chances are, if you’re eating something that came wrapped in plastic and contains a funky ingredient you don’t have in your kitchen, it's most likely—almost definitely—ultra-processed food, or UPF. More than the principal obstacle to “eating right,” UPF has been linked to metabolic disease, depression, inflammation, anxiety, and cancer, while the production, distribution, and disposal of UPF and related products globally is known to cause devastating environmental damage. At the same time, UPF represents the dominant, nigh-unavoidable food culture for millions upon millions of eaters.