Sugar Causes Hyperactivity in Children — Not Supported by Evidence

Many parents believe sugar makes children hyperactive, but scientific studies do not support this claim. Controlled trials have shown no consistent link between sugar intake and increased activity levels or behavioral changes in children.
In fact, this belief is often explained by expectation bias. When parents think their children have consumed sugar, they are more likely to perceive their behavior as hyperactive—even when the child was given a placebo.
Situations where sugar is consumed—like parties or celebrations—are already stimulating environments, which explains the increased activity more than the sugar itself.