Hypnosis is being promoted by Christians as a medical technique for the treatment of some ailments. Before accepting this you should read this book. The authors make a strong case that: Hypnotism is potentially dangerous at its best and is demonic at its worst.
The Bible clearly tells us as believers to stay away from the occult. Hypnotism can open a person up to the occult, so why would Christian promote it? Lack of discernment in an evil age!