Cannabis vapor has less tar, but may contain more ammonia. What happens to respiratory symptoms when regular users of joints, blunts, pipes, and bongs switch to a vaporizer?

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In case you missed the previous video, check out Effects of Smoking Marijuana on the Lungs (http://nutritionfacts.org/video/effec....

Here's my other cannabis videos that are up so far:
• The Institute of Medicine Report on the Health Effects of Marijuana (http://nutritionfacts.org/video/The-I...)
• Researching the Health Effects of Marijuana (http://nutritionfacts.org/video/Resea...)
• Is Marijuana Addictive? (http://nutritionfacts.org/video/Is-Ma...)
• Does Marijuana Cause Health Problems? (http://nutritionfacts.org/video/Does-...)
• Does Marijuana Cause Permanent Brain Damage in Teens? (http://nutritionfacts.org/video/Does-...)
• Does Marijuana Cause Permanent Brain Damage in Adults? (http://nutritionfacts.org/video/Does-...)
• Will Cannabis Turn into Big Tobacco? (http://nutritionfacts.org/video/will-...)
• Marijuana Legalization and the Opioid Epidemic (http://nutritionfacts.org/video/Marij...)

All my future upcoming cannabis videos can be streamed right now for a donation to the 501c3 nonprofit that runs NutritionFacts.org.

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-Michael Greger, MD FACLM

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