After earning degrees from Notre Dame and University of Michigan, Dr Walsh received a PhD in chemical engineering from Iowa State University. While working at Argonne National Laboratory in the 1970s, Dr Walsh organized a prison volunteer program that led to studies of prisoners and ex-offenders researching the causes of their violent behavior. Collaboration with the renowned late Dr Carl Pfeiffer, a pioneer in the field of nutrition research therapy, led Dr Walsh to develop individualized nutrient protocols to normalize body and brain chemistry. He went on to study more than 30,000 patients with mental disorders, acquiring an unparalleled database of more than 3 million chemical assays during his clinical and research work. Dr Walsh has conducted chemical analysis of more than 25 serial killers and mass murderers, including Charles Manson, and has assisted medical examiners, coroners, Scotland Yard, and the FBI in these forensic studies. He has designed nutrition programs for many elite athletes, including NBA players, major league baseball players, a heavyweight boxing champions, and others. He is currently the president of the nonprofit Walsh Research Institute and over the past 30 years has developed biochemical treatments for patients diagnosed with behavioral disorders, attention deficit hyperactivity disorder, autism, clinical depression, anxiety, bipolar disorder, schizophrenia, and Alzheimer’s disease that are used by doctors throughout the world. And finally he is also the author of Nutrient Power: Heal Your Biochemistry, Heal Your Brain, which most of us nutrition practitioners call our Bible for mental health and clinical practice.