<i>Following your doctor's advice on these issues is a sure way to ruin your health.</i><p>I actually don't agree with that. While I am willing to believe that the average doctor's understanding of nutrition is incomplete, I doubt the average punter's is any better.<p>Most people I personally know that "self-medicate" with advice they found on the Internet or read from some popular pseudo-science book seem to be engaging in magical thinking, and/or doing a great job ruining their own health by themselves. Perhaps you run with a more informed crowd.