The idea behind the Blood Type Diet is that we all have different nutritional needs depending on our blood type — O, A, B, or AB. According to the Blood Type Diet, eating certain foods based on ...

Medically reviewed by Aviv Joshua, MS, RDN The blood type diet is based on the theory that the best foods for your body are ...

Revolutionary findings challenge what we know about blood types and nutrition, revealing why the same diet affects people differently and what that means.