It's not an idea that needs putting to rest. There is no legitimate research that supports such causation. "Validation" would invalidate the existing body of research, which is improbable.
Why research has to validate everything? These are facts that children are regressing into Autism after MMR at 15 months.
Science still doesn't know how food gets digested and becomes poop. Will you stop eating, because science doesn't know what really happens during digestion?
> Science still doesn't know how food gets digested and becomes poop.
You're going to really need to provide some kind of evidence for this, because I'm pretty certain that scientists do have a pretty good idea how this process works.
For that matter, I could give you a layman's explanation that, while it may not be 100% accurate, probably would come really close to a real explanation...