In a study of 2564 people of varying ethnic backgrounds, researchers at Columbia University in New York and the Miller School of Medicine in Miami found a significant correlation between diet soda consumption and the risk of stroke.
Begun in 1993, the Northern Manhattan Study known as NOMAS has been ongoing and still continues. Researchers divided people into seven groups: those who drank less than one soda of any type per month, those with moderate soda consumption (up to six per week), daily regular soda consumption (one or more daily), moderate diet soda only, daily diet soda only, moderate diet soda and sometimes regular soda, and daily diet soda with any regular soda consumption.
Scientists factored in the age, ethnicity, gender, exercise habits, smoking status, alcohol consumption, and caloric intake. During the test period participants had 559 strokes combined.
After considering all the other factors studied, researchers concluded that regular diet soda drinkers had a 48% increased chance of having a stroke, while those who drank diet soda every day had a 61% increased risk of stroke over those who drank other types of soda.
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