I have had great results with my daughter now 4 with a generally additive free, low chemical diet with improvements in behaviour, going to sleep etc (used to have many major tantrums, defiance, took 2 hours to go to sleep). 160b is a big culprit. It makes my daughter extremely defiant, teary and she throws mega tantrums. (It’s so hard to educate my mum - as 160b is in so many "healthy foods" yoghurt, icecreams, etc). Our friends’ son is a headbanger when he eats annatto. – Tamsin, Vic