Hi ,did you ever heard of blood type diet ?every blood group has different chemistry and different way of metabolism.there is a book called live right 4 blood type and this is a wonderful book.type O people are really need to eat more meat and less carbohydrate while type A need to avoid meat and high in carbohydrate.personally i follow this blood type diet i am type A and i got the benefit.for type A meat raise cholesterol while for type O people carbohydrate is the cause blood cholesterol,and actually red meat lowering their cholesterol and weight.this book is amazing and has many cure for disease that most doctors have no clue about it .this is the food that we eat are making our destiny so why not know about it.you can check the side *****