To keep your teeth white, it's important to be mindful of what you eat and drink. Certain foods and beverages can stain your teeth, especially as you age. Here are some key points to consider: Coffee and tea are common culprits. Coffee is high in chromogens and acidic, which can turn teeth yellow over time. Tea, however, is even worse due to its high tannin content. Red wine is also problematic because it is acidic, contains tannins, and has a deep color that can quickly stain teeth. White wine, while not colored, still has acids and tannins that make teeth more susceptible to other stains. Brightly colored candies, ice pops, and sweetened drinks can stain teeth due to their aggressive food coloring. Cola and other sodas are acidic and can dull teeth, with dark colas containing chromogens. Clear sodas, despite their lack of color, still have acids that make teeth prone to staining from other foods. Lemonade, high in citric acid, can also lead to stains. Fruits like blueberries, strawberries, raspberries, and blackberries are high in chromogens and can stain teeth. A good rule of thumb is that if a fruit can stain your clothes, it can stain your teeth. To prevent staining, consider reducing the frequency of consuming these items, rinsing your mouth with water after consumption, and maintaining good oral hygiene.