An orthomolecular approach to the prevention and treatment of psychiatric disorders.

Orthomolecular medicine is based on the use of endogenous and naturally occurring substances to supplement deficiencies in vitamins, minerals, and other essential substances in the human body. Although the medical community has long regarded it as a nonscientific approach to healing, scientific and clinical evidence is emerging for the supplemental use of orthomolecular medicine in the treatment of schizophrenia, depression, bipolar disorder, generalized anxiety disorder, and attention deficit hyperactivity disorder. Psychiatrists currently treat these common psychiatric disorders using a wide range of pharmacological approaches that often have significant side effects, resulting in patients' noncompliance. With newly gained knowledge about the neurophysiology and neuropathophysiology of psychiatric disorders, researchers now can link potential mechanisms for both pharmacological and orthomolecular treatments to physiological processes. In many cases, the use of orthomolecular supplements may provide a feasible addition to conventional drug therapy.