From www.kansascity.com:

Heal faster with hypnosis
News flash: 15 minutes of hypnosis can reduce post-surgery pain.
Mesmerizing news for breast cancer patients: Just 15 minutes of hypnotherapy can reduce the amount of anesthesia needed during surgery and the pain, nausea and fatigue afterward. Doctors at New York’s Mount Sinai School of Medicine gave 200 women preoperative hypnosis or psychological consultation and also found the hypnosis patients were out of surgery 11 minutes earlier on average.

Been there, knew that . . . nice to see it in the mainstream media.