Teeth begin to turn yellow with age. But, some simple ways can help you in retaining the white color of your teeth. There are numerous tooth whitening kits available in your nearest medical store. But, most of these are chemical-based products, which bleach your teeth.

If you want to whiten the teeth and at the same time want to avoid chemicals, you should intake foods that whiten teeth naturally say no to red wine, dark berries, and black coffee.

Strawberries
Strawberries are known as the most efficient natural tooth whitener. They are the storehouse of malic acid, which is a natural astringent that prevents tooth discoloration. No matter how you eat them, cereal, salad or dessert, strawberries will ensure that you always own a brighter smile. You can even mash strawberries and use them as toothpaste as they are counted as one of the top foods that whiten teeth naturally.

Seeds and nuts
Most of the seeds and nuts such as walnuts, almonds, cashews or sunflower seeds have an abrasive texture. This abrasive texture works as a stain remover of your teeth and naturally whiten them.

Onion
Ignore its breath. Onions are the prime source of sulfur. The sulfur compounds available in onions keep plaque from forming on your teeth. Keep in mind that the anti-plaque powers of onion work when you eat them raw.

Apple
The loud crunch of apple helps in strengthening your teeth. Further, its high-water content increases the production of saliva. While eating an apple, this washes away the bacteria and leads to discoloration of teeth.

Baking soda
Baking soda works almost similar to a bleaching agent. You can switch to baking soda instead of your regular toothpaste to brush your teeth in the morning. It efficiently scrubs off plaque and surface stains of your teeth. Thus, baking soda is one of the key foods that whiten teeth naturally.

Carrot and celery
Like other veggies, carrot and celery carry high water content. This usually washes away food debris in addition to strengthening your gums.

Broccoli
They are high in fiber. Broccoli and other similar high-fiber and coarse foods scrub your teeth. Make a point to include such foods in your meal to whiten the teeth. You can toss them as a quick salad as well.

Cheese
Hard cheese is a great source of calcium, which helps in strengthening your gums. Further, casein, another milk protein found in cheese helps in preventing loss of minerals from your tooth enamel and helps to whiten teeth naturally.

Orange and pears
The flesh of orange helps in neutralizing the acid available in your mouth. These acids are known for causing decay of your teeth. Pears are also known for the same properties.

Dairy products
Dairy products such as milk and yogurt contain lactic acid and the enamel-fortifying mineral calcium. They work towards whitening your teeth; in addition to strengthening them.