The ketogenic diet (KD) is unique in improving symptoms for many conditions, from epilepsy to addiction, according to a recent JAMA Psychiatry article. It's a high-fat, very-low-carbohydrate nutritional therapy that shifts the body's from glucose dependence to ketone production as the primary fuel source. Increasing evidence implicates metabolic dysfunction, neuroinflammation, and neurotransmitter imbalance in psychiatric and addictive disorders-domains directly influenced by ketosis.