Post-concussion syndrome refers to the prolonged symptoms that follow a concussion or traumatic brain injury (TBI). These may continue weeks or even months after the initial incident. Symptoms of this condition can include brain fog, headaches, dizziness, mood imbalances, sleep disturbances and more. The role of diet should not be underestimated as a potential game changer in reversing some PCS symptoms, even if the concussion occurred in the distant past. Scientific literature supports the use of an augmented ketogenic diet until symptoms resolve.