"How not to diet" goes into far more depth; the references are so large, he put them online instead of making the book far larger than the 800 pages it already is. People sometimes read Dr. Greger through a lens which suggests he spends too much time talking "plant-based" when they, those readers, have digestive or other problems with strictly vegan diets. My take is that he does, at the very least, point out what the effects of non-plant-based sources can have. I do not read in his books (I have both, and watch all his videos) specific dietary advice; rather, I simply find in them the kinds of information I seek to make my own choices.
