Does diet soda raise stroke risk?
For starters, observational studies like this one (see "Diet soda and the brain: The latest findings") cannot prove cause and effect. Also, only 97 people had strokes during the 10-year follow-up, which means only two or three of those strokes could possibly be attributed to drinking diet soda, says Dr. Kathryn Rexrode, an associate professor of medicine at Harvard-affiliated Brigham and Women's Hospital who co-authored an earlier, larger study looking at soda consumption and stroke risk.
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