cigarette and weed which one is more harmful Let's Be Blunt Now Study: smoking pot raises level

Study: smoking pot raises level of harmful chemicals in body but smoking tobacco is more harmful The Boston Globe The Truth About Weed: More Harmful Than Most People Think, As cannabis becomes more accepted socially, many people assume its harmless. The reality is more complicated., Regular marijuana use has Smoking marijuana may be more harmful to lungs than smoking cigarettes, study finds ABC News More than one third of U.S. teens have used at least one substance by age 16, according to a new study led by researchers at the University of California San Diego that found Vaping weed is popular, but there are many unknowns about its safety : NPR

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