You can get addicted to nicotine within days of starting to use it. Nicotine affects the brain by releasing dopamine, which ...

Nicotine itself could clear from your body in a few hours, but its byproduct can linger for days or weeks. Most nicotine tests detect cotinine, which can show up in urine, saliva, blood, hair, and ...

It's tough to quit smoking and many people opt for substitutes like nicotine patches or gum to make the transition easier. But does that mean you're picking up another addiction? According to health ...

New e-cigarettes may contain nicotine-like chemicals with unknown impacts on our health, Yale scientists have warned. Despite interacting with the same receptors in our brains, these chemicals—called ...

A simulation has depicted the impact that vaping every day for 30 days can have on your body, including changes to the brain, lungs and heart.