I haven't read it. As a vegan, I know I won't be giving up grains, I just can't do it. I've looked at vegan low carb eaters and they eat SO much "cleaner" than I do. I don't think I could sustain it.
I'm terrified of Alzheimer's, though, that disease is why I cultivated a coffee habit in my early 30s even though I disliked it intensely (I don't dislike coffee any more, I love it, goes to show how your taste buds can change over time!).