It is widely accepted that sugar and foods high in sugar will make a child or young person hyperactive and extremely energetic. However, research conducted over the last 20 years has shown that sugar doesn’t necessarily lead to disruptive or hyperactive behavior. Placebo-controlled studies have shown that sugar isn’t a leading cause of hyperactivity in children, even in those who have ADHD. Researchers attribute the burst of energy children often have after a sweet treat to a release of dopamine. Our brains release dopamine when we receive an unexpected reward, like a sugary treat, with the chemical also leading to increased movement. Although it may seem that sugar won’t make your child hyperactive, they must consume it moderately, as it can harm their health. The World Health Organization says sugar should only account for 10% of a child's or adult’s daily energy intake.