Teeth decay when bacteria in the mouth (deposited on the teeth as dental plaque) convert sugars from all kinds of food into acids. This ‘acid attack’ dissolves minerals in the teeth. Your teeth can recover naturally from such attacks but if the balance is disturbed, for example if you frequently eat and drink between meals, cavities can form and your teeth can decay. Sugar itself cannot cause tooth decay without the presence of bacteria in dental plaque. To prevent cavities it is important to brush your teeth twice a day with fluoride toothpaste. Brushing removes the dental plaque – and therefore the bacteria – and strengthens the tooth enamel. You should also try not to eat and drink more than seven times a day, preferably no more than three meals and four snacks, so that your teeth have enough time to recover from the acid attack.