Doctors can be SUCH pompous asses. They assume if someone is not a doctor then they must be as dumb as a sack of rocks. I guess they've forgotten that doctors used to assume a birth defect in a baby was due to a fright received by the mother. Doctors do not know everything, either.
Some people simply respond to human touch. Lots of folks feel better simply because some personal attention has been paid to them. No, it might not cure them, but it sure can make them feel better for a while.
I appreciate that hospitals are exploring alternate methods to help their patients.