Mark Gurarie is a writer covering health topics, technology, music, books, and culture. He also teaches health science and research writing at George Washington University's School of Medical and ...

Anthea Levi is a registered dietitian (RD) and reporter with more than 6 years of experience writing for major health outlets including Health magazine, BuzzFeed, Eat This, Not That!, and Livestrong.

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Learn how nano hydroxyapatite toothpaste mimics tooth enamel, supports remineralization, and works with your teeth's natural crystal structure.