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A medical study shows no lung damage from "moderate" marijuana use.
A medical study shows no lung damage from "moderate" marijuana use.

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    Can pot smokers breathe easy?

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Can pot smokers breathe easy?

A new study shows no lung damage from "moderate" marijuana use. CNN's Elizabeth Cohen talks with Soledad O'Brien.

Can pot smokers breathe easy?

A new study shows no lung damage from "moderate" marijuana use. CNN's Elizabeth Cohen talks with Soledad O'Brien.