A great Chinese physician named Xu Da Chun (1693-1772) once remarked, "Sometimes the same disease attacks different people who are then treated in the same way and by the same medicine; but more often than not, some of them recover after treatment, others remain the same, still others even get worse. Why is that? The reason is that even though the same disease attacks, nevertheless it attacks different people." In what way are people different? It is maintained in traditional Chinese medicine that people are different mainly in their constitution, called body types. People are broadly classified into six body types each of which displays distinct signs and symptoms and requires certain foods for their good health.