Variations in the levels of two proteins critical for fat breakdown may explain why some blood types do poorly high fat diets, while others seem to thrive.

ABO blood group and secretor status exert a powerful influence on the growth on many microorganisms in the body, including yeast, such as Candida albicans, and many of the bacterial forms that inhabit the intestinal tract. In life it’s not just what you are eating, but what is eating you.