Does chewing gum improve our mind and our productivity?

For advocates of chewing gum in school, if there are any, the past decade of research has brought data, and perhaps hope. A project called The Effects of Gum Chewing on Math Scores in Adolescents studied the mathematics grades and test scores of 53 teenage students who chewed gum and 58 who did not. Craig Johnston of the Baylor College of Medicine in Houston, Texas, led the study. It was sponsored by the Wm Wrigley Jr Company, which makes chewing gum….

—So begins another Improbable Research column in The Guardian.