- People who smoke marijuana were more likely to have certain types of lung damage than people who smoked cigarettes, according to a new study that reviewed lung scans of smokers.
- The researchers who led the study say their findings suggest smoking marijuana may be more harmful than people realize.
- The Centers for Disease Control and Prevention estimates at least one-fifth of Americans have tried marijuana at least once. With more states legalizing the drug, it has become the most commonly used drug that is still illegal at a federal level.
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