For decades investigators have tried to prove what they intuitively suspected to be true. That chronic use of cannabis increases the dangers for lung cancer, and other smoke related pathologies such as COPD, and pneumonia in a similar fashion as tobacco smoking.
We have compelling data which has accumulated for over 45 years, but in particular over the last two decades, that even heavy cannabis smoking does not increase your risk for head and neck (previous articles) or lung cancers. Furthermore, the data substantiating increased risk for developing COPD, bullous disease (and pneumothorax), or of reducing lung function from smoking pot (or pot mixed with tobacco), is either poor quality or non-existent.
Editor’s Note: Interesting read from Dr. Christopher Rasmussen, anesthesiologist. He presents information from both sides of the argument, but summarizes that the most recent research conflicts what has been discovered in the past.