Earlier quoted context omitted.
After lung disease, the second largest consequence of tobacco smoking is heart disease, which is due to the nicotine itself.
It looks like about 1/3 of smoking-related deaths are due more to the nicotine than the smoke: https://www.cdc.gov/tobacco/data_statistics/fact_sheets/heal... That's much higher than I'd assumed, and bad news for those who want to claim that e-cigarettes are essentially safe. EDIT: DanBC points out below[1] that it's wrong to assume the cardiovascular disease is caused primarily by nicotine, which is how I came to th…
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