Work by other researchers, however, has suggested such supplements do improve the performance and behaviour of school-age children with specific diagnoses such as dyslexia, attention-deficit disorder and developmental co-ordination disorder.

ECONOMIST: Eat your way to a better brain

The disorders run the gamut from panic attacks and specific phobias to obsessive-compulsive disorder, post-traumatic stress disorder and generalized anxiety disorder, a random kind of worry described as free-floating and relentless.

WSJ: Anxiety Can Bring Out the Best