As earlier on discussed, human exposure to AFCS occurs mainly through ingestion. A recent British researcher indicates a possible link between consumption of certain food additives like artificial colours or preservative and an increase in activity (Mccann et al:2007). This study provides evidence of delaterous effects of AFCS on children’s behaviour with data from a whole population sample, using a combination of robust objective measures with strong ecological validity, based partly on observations in the classroom and ratings of behaviour made independently by teachers and parents in the different context of home and applying double blinded challenges with quantities of activities equal to typical dietry intakes. The present findings in combination with the replicated evidence for AFCS effects on the behaviour of 3-year old children, lend stong support for the case that food additives exacerbate hyperactive behaviours (innatention, impulsivity and overactive) in the children at least up to middlehood.
Increased hyperactivity is associated with the development of educational difficulties, especially in relation to reading, and therefore, these adverse effects could affects the child’s ability to benefit from the experience of schooling. (Mclee et al:2002)
These findings show that adverse effects are not just seen in children with extreme hyperactivity (i.e. ADHD) can also be seen as the general population and across the range severities of hyperactivity (Schab and Trinh:2004). The effects are shown after a rigorous control of placebo effects and for children with the full range of levels of hyperactivity.