Why don’t your teeth look white even if you brush them every day? Many people in our life may have this doubt. The yellowing of your teeth may be related to the wrong food you are eating. To whiten your teeth, you must remember three key factors in your diet: chewing, salivation and coloring foods. Not only should you drink less red wine and coffee, but you should also choose foods that can protect and clean your teeth. 1, chewing Eat fruits and vegetables can play the role of chewing, function as a toothbrush to scrub the surface of the teeth. Apples, carrots, cauliflower, beans, celery, etc. are good choices. Hard cheese is also good because chewing removes other food particles and prevents plaque buildup. This type of food massages the gums and stimulates blood flow, which helps protect oral health. 2, salivary secretion Increased salivary secretion helps to keep your teeth white. So when you eat citrus fruits such as grapefruit, limes, lemons and oranges, you can secrete more saliva to rinse your teeth. Strawberries, in particular, contain malic acid which stimulates the enzyme salivary secretion to produce more saliva. In addition, vegetables such as cauliflower are rich in fiber, which also helps to prevent inflammation of the gums. Pineapple is the only natural anti-inflammatory food due to the presence of bromelain. Calcium helps keep teeth white, so dairy products like milk and yogurt are also great for protecting teeth. 3, staining foods When it comes to yellowing teeth, people will point the finger at foods that tend to stain teeth. Of course, this is true. This means that we should try to avoid red wine, coffee, tea, colas and sports drinks that can stain our teeth. This also includes other darker colored fruits, blackberries, pomegranates and blueberries, as well as curries and sauces, candies and a variety of foods with added artificial stains. Simply put, if it stains your shirt, it will stain your teeth. Having a mouthful of white teeth can undoubtedly add color to your personal image, so a lot of people have been studying hard about teeth whitening methods. But sometimes the pursuit of perfection goes too far, a little candy, a small blueberry do not touch. In fact, an occasional glass of red wine is still irrelevant. A diet that promotes whiter teeth combined with good oral hygiene is more important. And thorough brushing, rinsing after meals and regular dental checkups play a considerable role.