Can eating candy cause mouth ulcers in children?

Excessive sugar consumption in children may lead to mouth ulcers, primarily because sugar provides a favorable environment for bacterial growth and reproduction in the oral cavity. Specifically, residual sugar left in the mouth can cause local mucosal damage through fermentation, which may trigger mouth ulcers. In addition, long-term excessive sugar intake may lead to malnutrition or anemia in children, as excessive sugar consumption can affect normal eating habits and reduce the absorption of other essential nutrients. Therefore, parents should control their children's sugar intake, avoid excessive consumption of sweets such as candy, and encourage children to eat more bland foods, vegetables, and fruits to maintain nutritional balance and reduce the risk of mouth ulcers.