Diacetyl Popcorn Lung Lawsuit [2026 Update] Can vaping cause cancer? The evidence suggests it might. The Washington Post It's official. Flavored e cigarettes cause permanent lung damage. And doctors are already seeing it happen. In the United States, a teenager developed something called popcorn lung after secretly vaping for three years. Vaping Marijuana Associated with More Symptoms of Lung Damage than Vaping or Smoking Nicotine Does Vaping Or Smoking Marijuana Cause Lung Cancer? SERO