I wish this article wasn't flagged, as even if the info is biased crap it is an important topic.

The only comment I have toward the discussion is to remember that the medical field (especially in the US) has a strong religious bias to diet. There are universities, medical schools, and hospitals built by religious groups who have very strong opinions on what is a 'good' diet. Medicine is more craft than science. Medical study quality and governance board decisions should always be questioned.