Medically reviewed by Mary Choy, PharmD Key Takeaways Nicotine has a half-life of about two hours and can stay in the blood ...

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, ...

Eons before Europeans arrived in North America, Native Americans cultivated the tobacco leaf for ceremonial activities and medicinal purposes for use during prayers and rituals. They presented the ...

Some research suggests using gum as nicotine replacement therapy can raise blood pressure. However, for some people, the benefits of replacing smoking with nicotine gum may outweigh the risks. Chewing ...

Secondhand smoke poses a significant health risk, and millions of Americans are unknowingly exposed to toxic smoke on a regular basis, a new study suggests. The study, published in the journal ...

Nicotine-free vapes are the go-to of smokers who want to quit their smoking habits. A new study from South Korea shows that switching from traditional smoking to vaping may increase the risk of ...

Introduction: The rate of nicotine metabolism, estimated by the nicotine metabolite ratio (NMR), is an important determinant of tobacco dependence. This study investigated the effect of NMR on smoking ...