If you remember your first hit on a cigarette, you know how sickening nicotine can be. Yet, for many people, the rewards of nicotine outweigh the negative effects of high doses. University of ...

After a few vigorous puffs of a burning cigarette, a smoker’s lungs will be filled with a toxic cloud of more than 5,000 different substances. Their combined effects on health are well known: cancer, ...