Back on April 16, 2006, an article appeared in the Sunday Magazine of the New York Times entitled, Does Eating Salmon Lower the Murder Rate? The author cites several studies linking violent and antisocial behavior to a dietary deficiency in omega-3 fatty acids.

Although this was several months before I first heard about the omega-3 fatty acid content of chia seeds, I was already interested in this aspect of nutrition.
I wrote this letter to the editor
In response to the article on omega-3 fatty acids, I have one observation: Children in schools across America are suffering from inattention, hyperactivity and impulsivity. This epidemic of A.D.H.D. arguably began soon after American parents discontinued the practice of administering the dreaded daily spoonful of cod-liver oil!
Margaret Conover
Stony Brook, N.Y.
My letter was published on April 30, 2006!