Many people love diet soda, but according to a new study, those who drink them on a daily basis may be at greater risk of having serious vascular events, such as stroke, heart attack and vascular death.

Researchers at the University of Miami Miller School of Medicine and Columbia University Medical Center analyzed the link between both diet and regular soft drink consumption and risk of stroke, heart attack, and vascular death. Data was pulled from 2,564 subjects, and looked at how often the subjects drank soft drinks, both diet and regular, along with the number of vascular events that occurred over a ten-year span.

They found that people who drank diet beverages on a daily basis were 43 percent more likely to have suffered a vascular event than those who didn’t drink any, after factoring in pre-existing vascular conditions like metabolic syndrome, diabetes and high blood pressure.

Those who drank diet drinks once a month, six a week, or only drank regular soft drinks were not more likely to suffer vascular events.

“Our results suggest a potential association between daily diet soft drink consumption and vascular outcomes. However, the mechanisms by which soft drinks may affect vascular events are unclear,” the study authors said, in a statement.