A recent study by Canadian researchers working with Unity Health Toronto (UHT) concluded that marijuana usage nearly doubles the risk of a heart attack for those under the age of 45, a group typically not susceptible to heart issues.

GrowthOp reports that the researchers came to this conclusion after studying the data of 33,000 Americans between the ages of 18 and 44 who had participated in a survey conducted by the US Centers for Disease Control (CDC). This included nearly 18% who had used Marijuana in the previous thirty days.

The researchers found that people who used marijuana at least four times a month saw their risk of heart attack nearly double, from 0.8 percent for non-cannabis users to 1.3% for those who did.

UHT also noted it didn’t seem to matter how the individual consumed the drug.

READ: Canadian study: Recent cannabis use linked to doubling of heart attack risk in those under 45 AND LINK TO STUDY: Recent cannabis use and myocardial infarction in young adults: a cross-sectional study