That was just an example - another potential bad guy could be Chlamydophila pneumoniae. Of course something like heart disease is probably caused by a myriad of interacting factors, so I wouldn't want to take your wager. I definitely don't assign a lot of confidence to the established research in health and nutrition though - for example, I think the food guide pyramid is bad advice and based on bad science, but it's been officially promulgated by the U.S. government for close to two decades now.