Presenting a wide scope of problems caused by B12 deficiency, this comprehensive guide provides up-to-date medical information about symptoms, testing, diagnosis, and treatment. Could it Be b12?, written for both the patient and the interested layperson, outlines how physicians frequently misdiagnose B12 deficiency as Alzheimer's disease, multiple sclerosis, heart disease, neurodevelopmental disorder, Parkinson's disease, depression, or other mental illnesses. Now in the second edition, this resource has been thoroughly updated with the latest research, diagnostic tests, treatment options, case studies, and testimonials. AUTHORS: Sally M. Pacholok, RN, has worked as an emergency room nurse and paramedic for 25 years. A member of the Emergency Nurses Association, Pacholok diagnosed herself with vitamin B12 deficiency after doctors failed to identify her condition. Jeffrey J. Stuart, DO, is a board-certified physician and a member of the American Osteopathic Association, the American College of Osteopathic Emergency Physicians, the Macomb County Osteopathic Society, and the Michigan Osteopathic Association.