Quote:
Originally Posted by fifthofnovember
It is common knowledge that cigarettes kill people and that marijuana does not. End of story.
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A study of 450 individuals found that people who smoke marijuana frequently but do not smoke tobacco have more health problems and miss more days of work than nonsmokers8. Many of the extra sick days among the marijuana smokers in the study were for respiratory illnesses.
http://www.nida.nih.gov/Infofacts/marijuana.html
Effects on the Lungs
Smoking marijuana, even infrequently, can cause burning and stinging of the mouth and throat, and cause heavy coughing. Scientists have found that regular marijuana smokers can experience the same respiratory problems as tobacco smokers do, including:
Daily cough and phlegm production
More frequent acute chest illnesses
Increased risk of lung infections
Obstructed airways
http://alcoholism.about.com/od/pot/a/effects.htm