This presentation address will relate research findings from various disciplines to help understand and identify the many possible causal factors for ADHD, Depression and Anxiety, hopefully leading to more effective treatment. How biological drives and environmental factors engender core belief systems. Brainstem neuromodulators and neurotransmitter systems involved Why 70-90% of patients with IBS also experience anxiety, panic and depression. Genes and Single Nucleotide Polymorphisms (SNPs). How some SNPs affect mental health. Nutrigenomics: Nutrient and SNPs interactions. How nutrient deficiencies affect mental health. QEEG power, asymmetry and coherence underpinnings. Effectiveness of symptom based Psychiatric treatment versus QEEG based. Post Concussion Syndrome masquerading as Anxiety, ADHD and Depression. QEEG as an adjunct in differential diagnosis. Multidisciplinary approach more effective than single paradigm.