There is some potentially bad news for diet soda drinkers.

A new study found a 43% greater risk of stroke or heart attack for people who drank a can of diet soda a day; compared to people who didn't drink any.

The study by The University of Miami and Columbia University followed more than 2,500 people over a decade.

Researchers say they found a potential association, but they don't know the exact cause.

The study appears in The Journal of General Internal Medicine.