In the 1970s, as the modern obesity epidemic was just getting started, investigators were searching for new animal models of diet-induced obesity. They tried all sorts of things, from sugar to various types of fats, but none of them caused obesity as rapidly and reproducibly as desired*. 1976, Anthony Sclafani tried something new, and disarmingly simple, which he called the "supermarket diet": he gave his rats access to a variety of palatable human foods, in addition to standard rodent chow. They immediately ignored the chow, instead gorging on the palatable food and rapidly becoming obese (1). Later renamed the "cafeteria diet", it remains the most rapid and effective way of producing dietary obesity and metabolic syndrome in rodents using solid food (2).