Taking medical cannabis for chronic pain linked to increased risk of arrhythmia
People taking medical cannabis for chronic pain have a slightly increased risk of arrhythmia, according to research published in the European Heart Journal today (Thursday). Arrhythmia is when the heart beats too slowly, too quickly or irregularly. It includes conditions like atrial fibrillation.
Recreational use of cannabis has been linked to cardiovascular disease but there has been very little research on the side effects of medical cannabis. (In most cases it’s simply the same ‘recreational’ product with the word ‘medical’ in front of it! And this is science?)
Researchers say the new study is important as a growing number of countries now permit medical cannabis as a treatment for chronic pain.
The data showed that patients receiving medical cannabis had a 0.8% risk of being diagnosed with arrhythmia that required monitoring and possible treatment within 180 days of receiving cannabis. This risk was more than twice the risk for patients with chronic pain who were not taking cannabis.
Medical cannabis is now allowed as a treatment for chronic pain in 38 US states as well as several countries in Europe – such as Spain, Portugal, the Netherlands and the UK – and elsewhere around the world. This means more and more doctors will find themselves prescribing cannabis, despite a lack of evidence on its side effects.
I don't think this research should make patients with chronic pain refrain from trying medical cannabis if other treatment has been inadequate. However, these results do suggest some improved monitoring may be advisable initially, especially in patients who are already at increased risk of cardiovascular disease."
Dr. Anders Holt from Copenhagen University Hospital – Herlev and Gentofte in Denmark
