I would hope this doctor had read the book, given the "controversy" surrounding Atkins. If he read the entire book, why in the world would he "not recommend" this WOE for life? He should have been able to read for himself that by the time his parents get to maintenance (and, really, before that) they are able to eat most of the foods that are considered "healthy", including bread. The quantity is certainly more limited, but even potatoes, for those who would want them, are not totally eliminated forever.