We are currently doing the elimination diet and are about to reintroduce foods. My son is 2 and has been a handful being constantly irritable, huge tantrums that are inconsolable lasting 30 mins or more 4-5 times a day, speech delay, no concentration, runny poos. He has been an angel since starting the elimination diet however took a backwards step at about 2.5 weeks. We discovered we had been giving him soy yoghurt with 160b in it. We took him off it and his symptoms cleared again. It was mostly behavioural issues such as tantrums. His poos weren't noticeably worse. – by email