FAB RESEARCH COMMENT:
This study adds some new experimental evidence to the longstanding question of whether opioid-like peptides derived from A1 beta-casein (found in cows' milk) may play a role in some symptoms of autistic spectrum disorders (ASD) - and related conditions.
Previous studies - like this one - have found some evidence of abnormal peptide profiles in at least a subset of children with ASD, but as usual, differences in the populations studied and methodologies used have made any clear conclusions difficult.
As usual, more research is needed.
Meanwhile, however, the A1 form of beta-casein is not found in goats' milk, sheeps' milk, human breastmilk - or the milk of any other mammals except mainstream dairy cows in most developed countries. These contain A2 beta-casein (the 'original' form in evolutionary terms).
Anyone suspecting that cows' milk might be linked with 'intolerance' symptoms could therefore explore whether other 'A2' forms of milk might
be tolerable, rather than excluding all milk and dairy products from the diet - although very importantly, this does NOT apply if classic milk protein allergy is known or suspected.
For more information on the differences between A1 and A2 milk, see
Read the abstract of the underlying research:
for other articles relating to autism and diet.