I'm feeling cranky as hell, so let me go ahead and toss out the wildly unpopular idea that the real solution here is more research etc into dietary and lifestyle changes. But I seriously doubt he's going to go in that direction.
That kind of research is really hard. You pretty much have to lock people up for long periods of time, and make sure they only eat what you give them. The current state of dietary research is pretty much a morass of contradictory associations, with no proof of any causative factors.
