Research by Susan Swithers, a professor of neuroscience and behavior at Purdue University, was raising the possibility that drinks and foods in which non-caloric sweeteners have been mixed with sugars might pose a special problem for us, in that we haven’t had enough time, on an evolutionary time scale, to develop a way to accurately sense or otherwise deal with the mismatch between the perception of calories and those that actually arrive in our gut. That could leave our metabolism a mess.
