Experts in This Article

dentist at Harris Dental and founder of dental-hygiene brand Klen.

Water with a pH below seven is considered acidic, while water above seven is considered alkaline.

These bacteria consume the sugar and release acid, which is what causes the cavities, Dr. Harris says.

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Thus, the root cause of most cavities is both sugarandacid.

The goal is to eliminate excess acid.

Its smart to see to it that your water is free from harmful contaminants, too.

Photography of a apple juice in glasses and apples in a wicker basket on wooden table

dentist at Harris Dental and founder of dental-hygiene brand Klen.

These types of drinks can contribute to tooth decay and erosion over time, she says.

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red pigment in a wooden spoon

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Cropped shot of young woman shopping in the dairy section of a supermarket. She is reading the nutrition label on a container of fresh organic healthy natural yoghurt

dentist at Harris Dental and founder of dental-hygiene brand Klen.

A hand is stirring a sourdough starter in a glass jar, on a kitchen countertop. The light casts a warm glow, highlighting the ingredients inside the jar.

Two cups with coffee and green tea on a beige background.