New Study Ties Processed Foods To ADHD
in 78% of Children
According to a new study, just published in Lancet Journal, a diet free of processed foods significantly reduces the symptoms of ADHD in 78% of 4-8 year old children. This 5-week study involving 100 subjects found that 63% of them experienced a relapse in ADHD symptoms upon re-introduction of problem foods into the diet.
This randomized crossover study was titled the Impact of Nutrition on Children with ADHD (INCA). Patients in the Netherlands and Belgium were enrolled via announcements in medical health centres and through media announcements. In the open-label phase (or first phase), children aged 4—8 years, who were diagnosed with ADHD, were randomly assigned to either 5 weeks of a restricted elimination diet (diet group) or to instructions for a healthy diet (control group). 
In the second phase, those children who responded positively (with an improvement of at least 40% on the ADHD rating scale) proceeded into the second phase, with a 4-week double-blind crossover food challenge, in which they were exposed to either a high-IgG or low-IgG food diet (classified on the basis of every child’s individual IgG blood test results).