It has long been known that tobacco is responsible for the formation of atherosclerotic plaques (or atherosclerosis) in the coronary arteries in particular. The role of cannabis, on the other hand, is still controversial.
In Switzerland, the researcher's team Reto Auer analyzed data from the CARDIA study, which has followed since 1985 the evolution of atherosclerosis in more than 5.000 young adults in the United States. For his research, the Bernese professor has retained 3.498 participants exposed to cannabis and tobacco, questioned about their consumption.
As expected, scientists found a strong link between tobacco exposure and the appearance of plaques in the coronary and abdominal arteries. In contrast, among cannabis smokers who had never touched tobacco, such a link could not be identified.
According to the authors, frequent cannabis use has only a small influence on atherosclerosis. A previous study on the same group had already shown that cannabis is not associated with infarction.
On the other hand, when adding tobacco to cannabis, the harmful effects are not to be underestimated, concludes Professor Auer, quoted in a statement from the University of Bern.
source : 5minutes.rtl.lu/