The article explores the historical basis and enduring belief that sugar causes hyperactivity in children, originating from as early as 1922. The notion gained mainstream recognition following the publication of Ben Feingold's book, 'Why Your Child Is Hyperactive' in 1974, which linked sugar to hyperactivity, particularly during festive occasions where children tend to have high sugar intake. Despite some parents resorting to sugar restriction to manage their children's hyperactivity amid fears of medication side effects, emerging scientific theories challenging this view have raised questions about the true impact of sugar on behavior. In the 1970s, with a rise in Attention Deficit Hyperactivity Disorder (ADHD) diagnoses in the United States, many parents became wary of medication side effects, leading them to consider dietary modifications as plausible solutions. Past studies suggested that high sugar diets could create insulin fluctuations, resulting in increased adrenaline production, thereby promoting hyperactivity. However, these findings lacked substantial scientific evidence, with many experts pointing out the inadequacy of studies supporting the sugar-hyperactivity connection. Research has shown that the correlation between sugar and hyperactivity may be more psychological than physiological, as situational factors often contribute to behavioral response rather than sugar intake itself. This unsubstantiated belief remains prevalent among many parents, despite the growing body of evidence from scientists that disputes the claim, indicating the need for continual education and dispelling of misconceptions surrounding children's diets and behavior.