is smoking cannabis as bad as cigarettes Adding tobacco to doesn't affect the high, but impacts memory and heart | UCL News Marijuana linked to heart disease;

Marijuana linked to heart disease; supplement may mitigate risk, study reports How does marijuana affect our bodies? University of California Marijuana may be more harmful to lungs than cigarettes, study suggests Many people think cannabis smoke is harmless. Here's how how that belief can put health at risk PBS News Lower grades, more absences for high schoolers who use both tobacco and cannabis Cigarettes or Marijuana: Which Is More Harmful?

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