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!).
If you want to view paradise, simply look around and view it. Anything you want to, do it...
Want to change the world? There's nothing to it...