John also examines other reasons for a vegetarian diet, such as the environment, animal ethics, and world hunger. I don't believe any truly caring person could read this book and continue to eat meat. It's a real wake up call. It's a very well researched book. I am still looking up some of his sources. One that I'm trying to look up is the claim that there is a 70% reduction in risk of prostate cancer for men who consume soy milk daily. Amazing, and that high dairy consumption increases risk by 70%. There's a lot of info about colon cancer risk and breast cancer risk. Anyway, I got so much out of this book and hope it is ok to recommend it here in this section. He discusses a lot of different diets also. It's a good read and will enlighten you to health risks of the good old American diet.