Attention Deficit Hyperactivity Disorder (ADHD)
is a neuro-developmental behavioral disorder characterized by inattentiveness,
over-activity, impulsivity or a combination of all.
estimated that 5% children across the world are affected with ADHD.
children often underachieve and find it hard to mingle and gel with their classmates or the peers
and are difficult children to bring up and are often victims of neglect. .
is treated with psycho-education, parent training, child behavioral
interventions and some medication.
Previous studies have suggested that food additives (colors and preservatives)
may have some effect on the behavior of children with ADHD and there are
suggestions that a
from these additives may help in treating these children. To diagnose such effect scientifically
antibody test using - IgG blood tests should be performed to establish a
relationship between ADHD and foods. It has been suggested that eating foods
that induce high IgG levels would lead to substantial behavioral relapse, while
eating foods that induce low IgG levels would not do the same.
there is no evidence for the effectiveness of these blood tests, researchers
wanted to study the link between diet and behavior among children with ADHD.
They also wanted to establish a link between allergic and non-allergic
mechanisms in food induced ADHD. For this purpose they randomly assigned 4-8
year old children diagnosed with ADHD on a restricted elimination diet (diet
group) or to a normal healthy diet
(control group) for a period of 5-weeks. Thereafter every child's IgG blood
test was carried out. Children who showed more than 40% improvement were again
assigned to a 4-week diet (second phase) in which high-IgG or low-IgG foods
were added to the diet depending on the results of the blood test.
It was seen that 64% (32 out of 50) children benefitted from the restricted elimination
. Re-introducing certain foods caused behavioral relapse in the
children. However IgG blood tests did
not help in determining which foods might have a deleterious behavioral effect
No substantial behavioral difference was noted in patients with high IgG or low
concluded that a strictly supervised restricted elimination diet is valuable
for assessing whether ADHD is induced by food. However, the prescription of
diets on the basis of IgG blood tests should be discouraged