The age old question of “Does marijuana cause cancer?” is still technically unanswered. We are extremely limited on the amount of research, due to constrictive federal and state drug laws. In our high, but professional opinion, we believe the likelihood for contracting cancer via marijuana is extremely low, and for best health results, stick to vaporizing, and minimize the blunts, joints, and unfiltered, combustion inhalation methods. There are a few studies though, so let’s look at them, and see why this question is so hard to definitively answer….
1. Lung.org – “Smoking marijuana clearly damages the human lung, and regular use leads to chronic bronchitis and can cause an immune-compromised person to be more susceptible to lung infections. No one should be exposed to secondhand marijuana smoke. Due to the risks it poses to lung health, the American Lung Association strongly cautions the public against smoking marijuana as well as tobacco products. More research is needed into the effects of marijuana on health, especially lung health.”
2. Cancer Research UK – “Whether cannabis can cause cancer is not a simple question to answer. We know from very clear evidence that tobacco causes cancer. But we are still learning about the effects of cannabis and whether it has the same effects as tobacco. There are a number of factors that suggest that cannabis could cause cancer:
3. Psychology Today – “To date, no large scale, epidemiological studies exist demonstrating a correlation between THC and cancer. During the early 1980s, Kaiser Permanente studied over 65,000 patients with a ten-year follow-up. About half of these patients, admitted to having tried marijuana. One hundred eighty- two tobacco related cancers were found but no effects of marijuana use on the risk of cancer. This study has some important limitations. First, the marijuana smokers were young (15 to 39), their usage was relatively light, and the follow-up period was short.”
4. NORML.org – This has a wealth of data concerning marijuana and cancer. Below are some of our favorite excerpts:
“Our results show that with the Volcano, a safe and effective cannabinoid delivery system seems to be available to patients,”investigators at Leiden University’s Institute of Biology (the Netherlands) concluded.”
“A review of two cohort studies and 14 case-control studies assessing the association of marijuana and cancer risk by Hashibe and colleagues concluded, “[R]esults of cohort studies have not revealed an increased risk of tobacco related cancers among marijuana smokers.”
“A large US case-control study funded by the US National Institutes of Health assessing the effects of marijuana smoking on the risks of lung cancer and upper aerodigestive tract cancers among 2,400 Los Angeles County residents less than 60 years of age is ongoing.”
Does Marijuana Cause Lung Cancer Specifically?
This is the most common question concerning marijuana use and cancer. Lung cancer is very scary, and we wanted to take a closer look at studies surrounding possibilities of lung cancer being caused by marijuana use.
1. International Lung Cancer Consortium – “An international team of investigators from Canada, New Zealand, the United Kingdom, and the United States analyzed data from six case-control studies involving over 5,000 subjects (2,159 cases and 2,985 controls) from around the world. Authors concluded, “Results from our pooled analyses provide little evidence for an increased risk of lung cancer among habitual or long-term cannabis smokers.””
Safe smoking to all, and to all a good night!