Author: Peter J. D'Adamo

Peter J. D'Adamo became known as a naturopathic author promoting diets organized around ABO blood groups. Allergies, written with Catherine Whitney, applies that approach to allergic symptoms. Its 2005 Berkley edition bears the fuller title Allergies: Fight Them with the Blood Type Diet. The book presents eating and lifestyle plans for the four blood types and frames them as ways to address food-related sensitivities. That account is important as a description of D'Adamo's program, not as settled medical guidance. A systematic review in The American Journal of Clinical Nutrition found no evidence validating claimed health benefits of blood-type diets, while Harvard Health similarly notes that reported benefits from such plans have not been shown to depend on blood type. Readers can therefore understand Allergies as part of D'Adamo's Blood Type Diet publishing project while distinguishing its proposals from independent clinical evidence. Whitney's credited collaboration also makes the volume a coauthored work rather than a solo title.