My daughter is nearly 5 years old. When we did the elimination diet we found that she reacts to the bread preservative, some other preservatives and MSG. Her reactions to the bread preservative range from temper tantrums to very moody pre-diet behaviour. This includes hitting and annoying her brother and sister if they are trying to do homework or just generally whingy and very demanding behaviour and refusing to do as requested. At night, she wakes up from 1 to 5 times per night and walks the house. When we put her back on to preservative-free bread her behaviour changed back to good behaviour within 3 or 4 days. - Moya, Qld