Fact Check: Does marijuana contain more tar than cigarettes? | Fact Check: Does marijuana contain more tar than cigarettes? Full Report: https://trib.al/ybEwXOO | By snopes.com | Facebook
SAMHSA on Twitter: "#DYK: Marijuana smoke deposits 4X more tar in the lungs and contains 50%–70% more cancer-causing substances than tobacco smoke. Learn about the dangerous health consequences linked to youth marijuana
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Entering an Indoor Space Where People Smoke or Formerly Smoked: What You Should Know - American Nonsmokers' Rights Foundation | no-smoke.org
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