Sugar Causes Hyperactivity in Children

Sugar does not cause hyperactivity in children—decades of research thoroughly debunk this myth. A landmark 1995 meta-analysis in *JAMA* of 16 double-blind, placebo-controlled trials found no significant behavioral difference between children given sugar and those given a placebo, even at doses exceeding 1.75 grams per kilogram of body weight (far more than typical snacks with 15-20 grams). Subsequent studies show parental expectation bias drives perceived hyperactivity: when parents think their child consumed sugar, they report more hyperactive behavior regardless of actual intake. This myth is more misleading than "You Should Starve a Fever" (ranked #5), as it can lead to unnecessary dietary restriction and guilt. Instead of blaming sugar, focus on sleep, screen time, and structured activities—real influencers of childhood energy.