001. a press release by D’Adamo Personalized Nutrition states in "D'Adamo Personalized Nutrition Store To Open in Wilton":
"the D’Adamo Personalized Nutrition Store guides the shopper in understanding why blood type matters for health and weight loss [...] Dr. Peter D’Adamo, a second-generation naturopathic physician and international author, whose books have been translated into over 65 languages has written the New York Times best seller, 'Eat Right for Your Type' and the Blood Type Diet [ERFYBT / BTD] series of books. He is also the author of 'The GenoType Diet' [TGTD], the first book that examines the possibilities of epigenetics and the use of diet and nutrition to profoundly alter gene function."
002. what reputable sources say about the ERFYBT / BTD and TGTD:
002.a. the Mayo Clinic states in "Is There Any Merit to the Blood Type Diet?" by Zeratsky, K. (RD ?, LD ?):
"there's no scientific evidence to support the so-called 'blood type diet,' in which different diets are recommended based on a person's blood type. At this time, eating or avoiding certain foods according to your blood type isn't thought to have any favorable influence on weight or overall health. In fact, a 'blood type diet' may not meet your nutritional needs."
002.b. Time Magazine states in "The Genotype Diet":
"naturopathic physician and researcher D'Amamo [sp., D'Adamo] has identified six 'genotypes': the Hunter, the Gatherer, the Teacher, the Explorer, the Warrior, and the Nomad. [Quoting D'Adamo:] 'yes, your genotype is the product of the genes you inherited from your family, but it's also the result of your prenatal experience.' In analyses that sound a bit like horoscopes ('explorers who maintain a detoxifying diet that also nourishes the blood and bone marrow will have few health problems and usually will have very little trouble attaining a healthy weight'), the author gives food dos and don'ts for each genotype. If there's anything scientifically sound about any of this, we haven't seen the signs."
003. caveat emptor!