Contains marijuana toxins

Hardening of the arteries Tobacco is more harmful than cannabis

Long-term cannabis use has historically been associated with deposits in the heart arteries. But now scientists have found out in a long-term study by the University of Bern that the consumption of cannabis is not the problem. Rather, the simultaneous tobacco smoke is the main cause of the calcification of the arteries.

Observed for over 25 years

The investigations used data from the long-term CARDIA study, which has been investigating the development of arteriosclerosis (hardening of the arteries) and its risk factors in young adults since 1985. Among other things, it recorded the cannabis and tobacco consumption of over 5,000 participants for over 25 years. In the 25th year, 3,117 subjects underwent computed tomography to measure calcium in the heart and abdominal arteries. Deposits had formed in the arteries of 60 percent of these participants. 84 percent of them used cannabis, but only six percent of them daily. In contrast, 49 percent of the participants smoked tobacco every day.

Only very high consumption is a risk

The scientists found that there is a strong link between tobacco use and calcification of the arteries. However, they could not find this connection in the participants who only consumed cannabis. A trend towards an increased risk of arteriosclerosis can only be identified in people with very high cannabis consumption.