This is no small study. It enrolled 10,892 middle-aged adults who did not yet have diabetes from 1987 to 1989. The patients were followed for up to 17 years and data about diabetes status, glucose levels, weight and more were collected at regular intervals.
But.. I wonder.. many of the ex-smokers I know have all developed a real sweet tooth to compensate. Could it be that.. no! of course not. That would be far too obvious! Or not. What do you think?