A poor diet can lead to gum disease and tooth decay. Foods high in carbohydrates, sugars and starches greatly contribute to the production of plaque acids that attack the tooth enamel. Eventually, these acids can cause tooth enamel to break down, forming a cavity.
If you do eat foods high in sugar or starch, try to eat them during meals, rather than between meals, and avoid any foods that stick to your teeth, because these can produce more plaque. Saliva production rises during meals, which can help rinse food and acids from the mouth.
Foods that contain sugars of any kind can contribute to tooth decay. Almost all foods, including milk and vegetables, contain some type of sugar, however, these foods are a necessary part of a healthy diet, because many of them also contain important nutrients. To help control the amount of sugar you consume, read food labels and choose foods and beverages that are low in added sugars. Added sugars are often present in soft drinks, candy, cookies and pastries.