Type AB blood is rare – it’s found in less than five percent of the population. And it is the newest of the blood types. Until ten or twelve centuries ago, there was no Type AB blood type. Type AB resulted from the intermingling of Type A with Type B. Type AB is the only blood type whose existence is the result of intermingling rather than environment. Thus, they share both the benefits and the challenges of both Type A and Type B blood types. Type AB has a unique chameleon like quality – depending on the circumstances, this blood type can appropriate the characteristics of each of the other blood types. Type AB is sometimes A-like, sometimes B-like and sometimes a fusion of both. Today, as we look back at this remarkable evolutionary revolution, it is clear that the genetic characteristics of our ancestors live in our blood today.
Eat Right for Wellness

Stress and Exercise
Even though people have different capabilities for accommodating stress, we ultimately all have a breaking point. Given enough stressors of a high enough intensity for a long enough period of time, anyone will maladapt. For a Type AB, when it comes to stress hormones, you most resemble Type O in your tendency to overproduce catecholamines like adrenaline. Yet you also have the additional complexity of Type B’s rapid clearing of nitrous oxide, so you suffer the physical consequences of high emotions. Your greatest danger is the tendency to internalize your emotions, especially anger and hostility, which is much more damaging to your health than externalizing it. Exercise plays a critical component in stress reduction and maintaining a healthy emotional balance for Type AB. Dr. D’Adamo recommends a combination of both calming activities and more intense physical exercise to help maintain an optimal balance. For example, three days of aerobic exercise such as running or biking and two days of calming exercise such as yoga or tai chi.