What foods should blood type B not eat? Examining the Diet's Claims
                                
                                
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                                    4 min read                                
                            
                                A 2013 systematic review published in the *American Journal of Clinical Nutrition* found no evidence to validate the purported health benefits of blood type diets, a theory that specifies what foods should blood type B not eat. Despite this, a list of foods to avoid has been popularized by naturopath Peter D'Adamo in his book, *Eat Right 4 Your Type*.