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But, since he stopped, he has been coughing up the brown and black substance, likely to be tar from his lungs

Because nicotine is the addictive chemical in cigarettes, lowering nicotine levels could help prevent future generations from becoming dependent on tobacco and support people trying to quit by easing withdrawal symptoms, according to researchers

"While more medication options in the toolbox for alcohol use disorders would be a plus, more research is needed," Aussem concluded

As of April 2026, the federal purchase age for nicotine products remains strictly 21+, and the FDA continues to issue deeming regulations that affect how vapes, e-liquids, and cigars are sold