You can get addicted to nicotine within days of starting to use it. Nicotine affects the brain by releasing dopamine, which makes you feel good. Even vaping can lead to nicotine addiction and harm ...

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 ...

Nicotine quickly enters your bloodstream. Your liver then breaks down nicotine into several byproducts, primarily cotinine. Depending on what you're testing, such as a blood, urine, saliva, or hair ...