http://articles.mercola.com/sites/articles/archive/2008/01/02/brain-chemistry.aspxIn certain areas of their brains, adults with attention deficit hyperactivity disorder (ADHD) have lower than average activity levels of an enzyme that produces the chemical messenger "dopamine." The finding supports theories that a dopamineenCommunityServer 2008.5 SP1 (Build: 31106.3070)