I found the book ‘Eat right for your blood type’ excellent. It explains that different blood types should avoid certain foods. I am blood type B and I should not eat chicken, tomatoes, corn or sesameseeds among some other things. I used to eat chicken and tomatoes all the time and I ended up with gallstones and very sick in hospital for a month. Since I changed my diet I’ve lost weight and kept it off and I feel much better in general.
It might not be everyones cup if tea but it works for me and I don’t ever feellike I’m o a diet, I still have lots of treats etc. so its win win!