I firmly believe in the benefits of meditation, and see that it is now being used at many hospitals and clinics for pain reduction as well as it's more familiar role for stress reduction and management. Guided imagery has also long been used in psychotherapy, even though the courts have recently declared it a "hypnotic treatment". I first started meditating in the 70's when TM was big, thanks to the Beatles, and also once attended a 3-day silent meditation retreat at a Bhuddist monastery as part of a Zen class for my undergrad philosophy degree, and the effect was amazing. It's many, many years old. But how and why it works is still under investigation, as your article points out. Thanks!