From the whole film, which is disappointing to watch, I commend Dr. Ratner on his patience when dealing with this and for stating the obvious: with so many studies on health, diet, diseases etc. --> "that is why we do peer review". Also, quite interesting that the study referred was not part of the director's notes (purposely or not?). This was a misrepresentation of veganism, I wish they would show a summary of scientific evidence rather than graphic images of surgeries, war and huge bar-plots that terrorize the audience.