"Nutrient Power" presents a science-based nutrient therapy system that can help millions of people diagnosed with mental disorders. This approach recognizes that nutrient imbalances can alter brain levels of key neurotransmitters, disrupt gene expression of proteins and enzymes, and cripple the body's protection against environmental toxins. The author's database containing millions of chemical factors in blood, urine, and tissues has identified brain-changing nutrient imbalances in patients diagnosed with autism, depression, schizophrenia, and Alzheimer's disease.