Some potentially bad news for diet soda drinkers.
A new study found a 43 percent 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 25 hundred 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.