The credibility of linking a dietary lifestyle to one's Blood Type is also being challenged by an ever-increasing number of individuals who applied the principles of the Blood Type Diet since its inauguration. After changing to a more vegetarian or meat-based lifestyle, or after adjusting to specific foods based on Blood Type Diet recommendations, they subsequently had to revert back to their previous dietary lifestyle again following a decline in their well-being, the tolerance of the new diet, or the poorer management of their medical issues... Full Text