Recognitions

NCCIH thanks Pete Murray, Ph.D., David Shurtleff, Ph.D., and Helene M. Langevin, MD, NCCIH for their review of the 2022 update of this fact sheet.

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NCCIH has provided this material for your information. It is not intended to replace the medical expertise and advice of your healthcare provider(s). We encourage you to discuss any decisions about treatment or care with your healthcare provider. The mention of any product, service or therapy is not an endorsement by NCCIH.