Many people believe that excessive amounts of sugar are to blame for hyperactive behaviors, or even for ADHD itself. However, research investigating the effect of sugar on behavior is mixed, with many studies finding no association between refined sugar consumption and increased hyperactivity and others finding only a weak association. On the other hand, some children—with and without ADHD—do appear to be more sensitive to sugar than others, and may experience increased hyperactivity after consumption. Sugary foods alone are not to blame for a child’s ADHD diagnosis.