“Eat right 4 your type” by Dr. Peter J. D'Adamo. https://quackwatch.org/consumer-education/negativebr/d-adamo/
Widely available in health shops where I live, his book has been proven wrong about our blood, diet and he will not publish the “scientific” evidence he claims to have.
I’ve seen many people turn to this book, hoping to improve their health. It’s such a devious way to make money.