Day 18 : "Blood-type" diet theory, fact or fake?

A newly published paper in PLoS ONE in Jan 2014 reveals that there is no relation between the blood group and the adherence of the cardiometabolic risk factors.

In 1996, a bestseller book "Eat right for your type" was attempted to give a theory that our diet and health is related to the blood type. The ABO blood group is categorized based on the structural difference of the carbohydrate antigenic substance on red blood cells. According to the author P.J. D'Adamo, different blood type group should adhere to different diet to improve health and decrease risk of chronic diseases. For example, blood type group O should consume diet with high animal protein diets; Group A should thrive on a vegetarian dieats; Group B should consume more dairy products; And group AB should have diet that is intermediate to those proposed for group A and group B.

The Blood Type Diet hypothesis is so popular but has been debunked by The University of Toronto. The findings show that adherence to certain 'Blood-Type' diets is associated with a favorable profile for certain cardiometabolic risk factors in young adults, but these associations were not related to an individual's ABO blood group.

Reference : Wang J, Garcı´a-Bailo B, Nielsen DE, El-Sohemy A (2014) ABO Genotype, ‘Blood-Type’ Diet and Cardiometabolic Risk Factors. PLoS ONE 9(1): e84749.
doi:10.1371/journal.pone.0084749

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