hi joe is 9 and has been diagosed autistic since age 2. he has been gluten, casein, masg and sweetener free since age 4.
we had a urine test done at the university of sunderland in the UK. the test looks for peptides in the urine, which indicate that the child has a leaky gut and too many wheat and dairy proteins are getting through the gut wall, turning into opioids and affecting the brain. this is a very simple explanation as i'm not very good at science!!! basically the opioids have a similar affect on the brain as heroin or morphine - that is the theory.
joe's urine test from sunderland showed up positive so we put him on the diet and WOW he has made tremendous progress. he was very severely autistic, non verbal, lots of terrible meltdowns. he now can talk, read, do addition and some subtraction, he has a lot less meltdowns and they are much less severee, he interacts with us, gives us hugs etc. it is lovely to see. he will be on this diet for life as whenever he gets things that he shouldn't have his behaviour is appalling - though he can't control it.
a good website to look at is autism medical (.com) you add the w's and leave out the spaces!
joe didn't really have any bowel problems before the diet except for bouts of diarrhoea occasionally. when he went on the diet the diarrhoea became more frequent, but we give L-glutamine, once a day and joe's bowel movements are now normal.
hth