Psychiatric drugs reduce the symptoms of anxiety, depression, ADHD, behavior disorders, Alzheimer’s disease and other common brain imbalances, but they do not treat the cause. Methylation defects, high or low histamine, copper and zinc ratio disturbances, pyroluria, toxin accumulation, increased oxidative stress, nutrient malabsorption, adrenal insufficiency, gluten intolerance, and epigenetic or genetic gene variants are some of the biological issues contributing to these common problems.  Chronic stress is the biggest toxin of all.