After a free, evidence-based guide to health and wellness? Sign up to our weekly Well Informed newsletter. BY SOME reckonings, nicotine is as addictive as cocaine. It has led legions to a slow death ...

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 ...

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 ...

Nicotine pouch usage rose over 600% between 2019 and 2022, according to a 2022 study by JAMA Network. Brands like Zyn offer an assortment of flavors and products to choose from and have established ...