Diet is often a leading cause of tooth decay. Foods like milk, honey, soda, cookies, and chips all cause tooth decay because they cling to the teeth after eating, coating them in acid-producing bacteria. If you frequently find yourself snacking and sipping sugary drinks, eliminating these foods and beverages can help reduce your risk for tooth decay.
A lack of fluoride also contributes to tooth decay. This naturally occurring chemical is added to many municipal water supplies and can be found in some types of toothpaste and mouthwash. Fluoride helps reverse the early effects of tooth decay to keep teeth healthy and strong.