It can be mastered along with the chiropractic art. However, as disease is a complex matter, likewise is health. It is rather simplistic to think that one can be an expert in both disease and health. Both are complex areas of the human experience. The straight therefore desires to stay out of the disease area and focus his attention on health or at least one aspect of health, the vertebral subluxation.
Health involves genetic, nutritional and environmental factors as well as many others.
To believe that one can address all these needs is oversimplifying to the point of naivet . Despite my relatively limited education I can make the necessary decisions for you regarding your health and, if need be, disease. Granted, the human body is a complex organism, granted the factors that influence it both positively and negatively are complex. But I have reduced these factors to such a simplistic point that you the patient should put your complete trust and faith in me for I am the total doctor and if by chance you have a condition outside my area of expertise I will know and be able to refer you to the proper specialist. The human organism is complex.