My opinion is that Dr. Hyman and others eminent colleagues of his (the cited Dr. Ornish has huge credentials) have a mission toward the general public, whereas the mission of the great saints is restricted to spiritual aspirants. In some aspects, the teachings overlap (for example, the benefits of plant-based foods). In other aspects, the teachings diverge (for example, meat).
By the way, Dr. Ornish suggests a low-fat plant-based, vegan cuisine, possibly with low-fat dairy products and egg whites. There are so many doctors with vast credentials, and every one of them has a nuance in his teachings, targeted to particular sets of people.
I want you to know mccoy that despite the psychic and spiritual experiences many of us have talked about having over the yrs. i find that Spirit has given you a very important tool and gift that never seems to stop reminding me as the years pass. That is an incredible gift in harmonizing people with tact and diplomacy. A recognition of what is suited and helpful for everyone.