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Exposure to secondhand smoke in the home increases the risk for: Being exposed to secondhand smoke also increases the risk for heart attacks and lung cancer

The good news is this discoloration can be reversed through a professional smile whitening or cosmetic dentistry treatment like veneers

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Tar, the dark, sticky stuff that you might recognize from blacktop roads, is the villain behind that yellowing effect on teeth

And it causes a lot of extra disease burden. According to the National Cancer Institute, about 250 of the more than 7,000 chemicals in secondhand tobacco smoke are known to be harmful, and about 70 of them cause cancer

You must also be at least 18 years old to legally use e-cigarettes, although some cities and towns have passed laws that set the minimum age higher than 18 for vaping