Researcher Karl-Ludvig Reichelt and his colleagues at the National Hospital in Oslo have found that autistics have more peptides, or fragments of proteins in the urine than healthy people. The effect of this peptide accumulation is an opium-like effect in the brain. The autistics function better socially and achieve greater benefit from teaching and other stimulus when they eat a diet with low protein content without gluten and dairy products. The Norwegian nutrition physiologist Dag Viljen Poleszynski is also interviewed in this film. This is a trailer of the film FOOD? (2005).