Researchers at UCSF conducted a study on the effects of marijuana on the heart. The findings are preliminary, but they suggest a potential link between marijuana use and heart health.

A group of regular cannabis users was tracked for two weeks to gather data. The results indicate that marijuana use may be associated with a decrease in certain heart irregularities.

Further information on this study is available from the source, including details on the methodology and conclusions drawn by the researchers. The study's results are considered preliminary and may require additional research to confirm the findings.