Yes. The American Medical Association formally approved hynosis in 1958. Today, it is a widely accepted and successful form of treatment for many conditions.
Yes. Anxious individuals do very well. They may not be able to relax on their own, but with the help of a qualified practitioner, they easily attain a state of relaxation and hypnosis. Often people become so relaxed that they describe the experience as a "mini-vacation."
Absolutely not. Hypnosis allows you to achieve a state of relaxation. However, you are always in control and cannot be made to do anything against your will.
Approximately 95% of the population is susceptible to hypnosis. Often, only a light state of hypnosis is required to help a person achieve the intended results.