Limitations and the Need for Further Research
Both studies have limitations that warrant caution in interpreting their findings. The retrospective nature of the analysis means that researchers cannot fully establish exact causation, only correlation. Also, the meta-analysis faced challenges in accounting for other potential factors, such as the duration and amount of cannabis use or the concurrent use of tobacco and other drugs.
“We should have some caution in interpreting the findings in that cannabis consumption is usually associated with other substances such as cocaine or other illicit drugs that are not accounted for,” Dr. Kamel noted. “Patients should be forthcoming with their doctors and remember that we are their number one advocate, and having the full story matters.”
Prospective studies, which follow participants over time, are needed to confirm these findings and identify which groups may face the highest risk. Such research could also help clarify the specific ways in which cannabis affects the cardiovascular system and whether certain forms of cannabis (e.g., smoked, vaped, or edibles) carry different levels of risk.