We know that injuries to the head can affect one's capacity to think and that changes in dopamine levels in the brain can have bizarre mental effects. (faith.org.uk)
First - line therapies currently focus on increasing dopamine levels in the brain, but these treatments can cause serious side effects and often lose effectiveness over time. (sciencedaily.com)
You may even notice some withdrawal symptoms, since sugar boosts dopamine levels, similar to some illicit drugs. (detoxdiy.com)