Boy, I'm glad I ran into this topic. We are new to all of this. We have taken my 6yo son off of dairy and wheat/gluten. We've also started avoiding dyes, preservatives, MSG, etc. We give him a multi-vitamin and calcium and have just started looking into the supplements. Well, the only one we've started was fish oil. His behavior has changed significantly for the better and he is more vocal than he has ever been - but he still tics (a big hockering sound lately). So, we're taking him off the fish oil to see if what we've done so far has helped any. I'd hate to think all of this effort has had no effect - to think, the fish oil may be masking any benefit from the other interventions. Thanks for the lead anyway.