You might want to check with the experts:
“Spiritual practices such as transcendental meditation, healing touch (involving “subtle energies”), acupuncture, or Reiki may at times be offered to Christian, Muslim, or Jewish patients as part of alternative or complementary medicine programs (and even as part of standard therapy in some cognitive-behavioral therapies). Practitioners may present these spiritual practices with an almost evangelical zeal to patients who are desperate for help after allopathic medical treatments have failed. Patients from conservative Christian or Muslim groups may know very little about such practices, which are rooted in Eastern or New Age religious traditions and may directly conflict with their religious beliefs.”
HP’s not knowledgeable about or insensitive to conservative Christian beliefs may impose these foreign spiritual practices on patients without fully explaining their origins and without providing traditional Christian alternatives more consistent with patients’ beliefs (such as prayer, visit with a chaplain, access to religious services or religious literature like the Bible). Devout Muslim patients may likewise be offended when spiritual practices rooted in Eastern or New Age religious traditions are offered to them. Although there is little research on how often this occurs, my sense is that such practices are not at all uncommon in alternative and complementary centers at many major hospitals and medical centers in the United States today.”
Koenig, Harold MD, Spirituality in Patient Care: Why, How, When, and What Templeton Press; Third Edition, Revised and Expanded edition: June 1, 2013, p.149.
Notice the word “yoga” doesn’t appear in there. With good reason. For Americans in gyms it’s just exercise. Invented by a Russian woman. In America (and other places, she traveled a lot).
A doctor may have put that statement in his book but you can bet the farm that the source of it was a lawyer. Or more precisely many corporate lawyers. Nothing is quite so lucrative as suing doctors, hospitals and other health care entities.