Duke professor Diego V. Bohórquez tells us why we want more sugar when we've already eaten some. Bohórquez is an assistant professor of medicine and pathology and a member of the Duke Institute for Brain Sciences. Turns out the cravings aren't just from our tastebuds, but also from sensors in our gut that send information to our brains about the content of our food.
This video is a part of Duke's series, Extra Credit: Life's Curiosities Explained. To see more, check out the playlist.