There has been lots of anecdotal evidence that acupuncture has some real effects, but it was quite hard to tell whether it was psycho-somatic or not.

From the patient's point of view, if acupuncture (or any other healing method) works to relieve symptoms, who cares if it's psychosomatic or not? I do understand the human need/desire to understand HOW things work, but hey, if your friend pointed to the full moon and said "Oh look -- isn't that beautiful!" would you be gazing in wonder and appreciation at his fingertip, or at the moon???