I'd start with a movie, not a book. The movie is "Game Changers", directed by James Cameron, and released last month on Netflix and Amazon Video. If you're skeptical about the science behind the movie, read the critique published in Men's Health magazine along with the rebuttal from one of the MD's interviewed in the film.
Next I'd read "The Engine 2 seven-day rescue diet" by Rip Esselstyn. If you a more in-depth treatment, try "How Not to Die" by Michael Greger, MD. If you want scientific journal articles, I recommend the work of Caldwell Esselstyn. MD and Dean Ornish, MD. Dean Ornish's TED talk is also a good reference.