Someone who smokes marijuana often.

No.

There is not 1 reported death from consuming marijuana. That should answer your question.

no

The answer is, it isn't. A recent study comparing nonsmokers, tobacco-only smokers and marijuana-only smokers found there is no correlation between lung cancer and marijuana use, even in heavy marijuana smokers. A link to the study is given below:

(See related links)

You still have an increased risk of lung disease and "smoker's cough", but consider this myth debunked.