If you are aware that sugar can cause ADHD, then you may no longer buy sweets, pastries, commercial fruit drinks, and other sugary foods when you do the groceries. Instead, you purchase sugar-free alternatives and artificial sweeteners. After all, it would be cruel to deprive your child of these sweet treats. But did you know that sugar-free foods won’t necessarily help your child overcome ADHD? Sugar-free products contain substitutes that children with ADHD can be intolerant to. Below are two sugar-free ingredients that your child needs to avoid, and the surprising truth behind them.