Free fatty acid supplementation produced small but significant reductions in ADHD symptoms even with probably blinded assessment s , although the clinical significance of these effects remains to be determined .
Artificial food color exclusion produced larger effects but often in individuals selected for food sensitivities .
OBJECTIVE Nonpharmacological treatments are available for attention deficit hyperactivity disorder ( ADHD ) , although their efficacy remains uncertain .
The authors undertook meta-analyses of the efficacy of dietary ( restricted elimination diets , artificial food color exclusions , and free fatty acid supplementation ) and psychological ( cognitive training , neurofeedback , and behavioral interventions ) ADHD treatments .
A randomised controlled trial into the effects of food on ADHD
The aim of this study is to assess the efficacy of a restricted elimination diet in reducing symptoms in an unselected group of children with Attention deficit/hyperactivity disorder ( ADHD ) . Dietary studies have already shown evidence of efficacy in selected subgroups . Twenty-seven children ( mean age 6.2 ) who all met the DSM-IV criteria for ADHD , were assigned r and omly to either an intervention group ( 15/27 ) or a waiting-list control group ( 12/27 ) . Primary endpoint was the clinical response , i.e. a decrease in the symptom scores by 50 % or more , at week 9 based on parent and teacher ratings on the abbreviated ten-item Conners Scale and the ADHD-DSM-IV Rating Scale . The intention-to-treat analysis showed that the number of clinical responders in the intervention group was significantly larger than that in the control group [ parent ratings 11/15 ( 73 % ) versus 0/12 ( 0 % ) ; teacher ratings , 7/10 ( 70 % ) versus 0/7 ( 0 % ) ] . The Number of ADHD criteria on the ADHD Rating Scale showed an effect size of 2.1 ( cohen ’s d ) and a scale reduction of 69.4 % . Comorbid symptoms of oppositional defiant disorder also showed a significantly greater decrease in the intervention group than it did in the control group ( cohens ’s d 1.1 , scale reduction 45.3 % ) . A strictly supervised elimination diet may be a valuable instrument in testing young children with ADHD on whether dietary factors may contribute to the manifestation of the disorder and may have a beneficial effect on the children ’s behaviour
Free fatty acid supplementation produced small but significant reductions in ADHD symptoms even with probably blinded assessment s , although the clinical significance of these effects remains to be determined .
Artificial food color exclusion produced larger effects but often in individuals selected for food sensitivities .
OBJECTIVE Nonpharmacological treatments are available for attention deficit hyperactivity disorder ( ADHD ) , although their efficacy remains uncertain .
The authors undertook meta-analyses of the efficacy of dietary ( restricted elimination diets , artificial food color exclusions , and free fatty acid supplementation ) and psychological ( cognitive training , neurofeedback , and behavioral interventions ) ADHD treatments .