The fruits and vegetables diet is quite common but this is the first time that I’ve heard of a seafood diet. My niece who is diabetic and needed to cut down on her weight is on a seafood diet. She said that she cannot do OMAD because of her blood sugar that couldn’t go low otherwise it will be a disaster for her. With the seafood diet, it is mostly fish, cuttlefish, clams, oysters crabs, etc. The cooking is broiled or steamed depending on the dish. What’s good in the seafood diet is the vitamins that you get and the weight gain is practically zero or even negative. However, seafood diet is not good for the pocket because it is expensive.