A new study published by researchers from Bronx Lebanon Hospital Center in New York indicates marijuana use significantly increases the risk of acute coronary syndrome in young adults.

Acute coronary syndrome refers to a condition in which blood is unable to reach the heart. It includes  serious heart problems like heart attacks and unstable angina.

This is not the first time marijuana-use has been linked to heart problems. Multiple case studies and reports have been published indicating marijuana-use can cause heart attacks–especially in adolescents and young adults.

As we keep saying, marijuana may be many things, but “harmless” simply is not one of them.

You can read more about the study here.