Choosing foods this way represents a lifelong commitment. It is always up to you to decide what foods you eat. Some people report having adverse reactions to avoid foods after choosing beneficial & neutrals for a six month period. Others report that they have a greater tolerance for previously distressing foods. Only time will tell how you will react.
Dr. Peter D'Adamo developed Catechol nutritional supplement to help the body regulate nutritional stress support, while helping to promote a natural state of calm in individuals with blood types O and AB.