Dr. Peter D'Adamo has published work on the use of blood typing as a means of determining an individual's optimal diet. While we at Carbon Based believe that the basis of the blood typing diet is somewhat questionable, it can be used in conjunction with a person's present chemistry. Our CellMate™ Blood Test Interpretive Report takes into account differences in people's chemistry to provide a more "biochemically individualized" dietary and nutritional supplementation regime.
In Dr. D'Adamo's book, he recommends a higher protein/meat diet for Type O's. While this may work for some, those with a low CO2 may not do well on that type of diet. Due to a low CO2 level the individual's chemistry may not have the ability, according to research by Dr.'s Wiley and Watson to oxidize proteins and fats efficiently. Increasing CO2 may be helpful (sparkling waters, juices, etc.), in your achieving full genetic potential.