Biofeedback, or biological feedback, is a treatment technique in which individuals are trained to improve their health and well-being by using signals from their own bodies. Its underlying principle is that changes in thinking and emotions can result in corresponding physical changes in the body.

As a type of behavior therapy, biofeedback is used to treat stress-related problems by teaching people to consciously regulate mental and physical functions that are not ordinarily under their conscious control. Although results are not always clear-cut or permanent, many people find the technique beneficial.

People of all ages can learn biofeedback. It is a non-invasive, cost-effective, and relatively safe treatment that, if nothing else, makes people more aware of their bodies' functions and gives them an increased sense of responsibility about their health.

As an adjunct to conventional medicine, biofeedback should only be used after patients have undergone a thorough physical examination...