Animal foods are the wrong food for humans.
That is a statement from John McDougall, MD's latest book The Starch Solution: http://peopleforplants.blogspot.com/2012_05_01_archive.html (Scroll down) From page 38: "Every day I witness serious diseases that stem from eating animal foods, including heart attacks, strokes, type 2
diabetes, arthritis, osteoporosis, and cancer. All animal foods cause illness when consumed in amounts typically found in the Western diet. Why? Primarily because they are the wrong food for humans."