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Can marijuana lead to lung cancer?

ANSWER

Because it’s been illegal, it’s been hard to do research on it. Like tobacco, it does have tar and other chemicals known to cause cancer. So while there could be a link between smoking marijuana and lung cancer, there’s not enough research to know for sure.

SOURCES:

NIH, National Cancer Institute: “Harms of Cigarette Smoking and Health Benefits of Quitting,” “Secondhand Smoke and Cancer.”

Mayo Clinic: “Lung Cancer.”

Cancer Research UK: “How Smoking Causes Cancer.”

American Lung Association: “Lung Cancer Fact Sheet.”

Dana-Farber Cancer Institute: “How Does Cigarette Smoke Cause Lung Cancer?”

CDC: “What Are the Risk Factors for Lung Cancer?” “Health Effects of Secondhand Smoke.”

Cleveland Clinic: “Cigarettes, Cigars and Vaping: Which Habit Puts You Most at Risk?”

KidsHealth: “E-Cigarettes.”

University of Rochester Medical Center: “E-Cigarette Vapors, Flavorings, Trigger Lung Cell Stress.”

American Cancer Society: “Small Cell Lung Cancer Risk Factors.”

HelpGuide.org: “How to Quit Smoking.”

Reviewed by Lisa Bernstein on July 11, 2017

SOURCES:

NIH, National Cancer Institute: “Harms of Cigarette Smoking and Health Benefits of Quitting,” “Secondhand Smoke and Cancer.”

Mayo Clinic: “Lung Cancer.”

Cancer Research UK: “How Smoking Causes Cancer.”

American Lung Association: “Lung Cancer Fact Sheet.”

Dana-Farber Cancer Institute: “How Does Cigarette Smoke Cause Lung Cancer?”

CDC: “What Are the Risk Factors for Lung Cancer?” “Health Effects of Secondhand Smoke.”

Cleveland Clinic: “Cigarettes, Cigars and Vaping: Which Habit Puts You Most at Risk?”

KidsHealth: “E-Cigarettes.”

University of Rochester Medical Center: “E-Cigarette Vapors, Flavorings, Trigger Lung Cell Stress.”

American Cancer Society: “Small Cell Lung Cancer Risk Factors.”

HelpGuide.org: “How to Quit Smoking.”

Reviewed by Lisa Bernstein on July 11, 2017

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What are statistics on smoking and lung cancer?

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