My 3 year old's behaviour improved on the elimination diet at first but then he started getting worse and went back to what he was like before the diet - screaming fits, teary, really temperamental, waking at night. He was eating frozen oven fries every night but when I phoned the manufacturer (ingredients: potatoes, canola oil, salt) they told me there were no antioxidants in the oil. Two weeks later the company admitted that their product did contain unlisted BHA under the 5% loophole. – reader from WA