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cigarette smoking and weight loss Truth About Smoking: Does It Cause Loss? Fewer people smoke. More are
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Cataracts are removed with surgery

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Smoking easily causes teeth staining, but vaping quietly damages gums internally

Since the lagged variables are used as the instrument, the number of observations in the OLS regression is smaller than that in the 2SLS regression

As the years went on, smoking became less and less associated with any particular class or gender