New Research links diet soda consumption with an increased risk of heart disease and stroke, but Doctors warn...  the study is controversial and the results are only preliminary.  

According to the federally funded study of more than 2,500 people in the New York City area, people who drank diet soda on a daily basis had a 61 percent increased risk of heart disease or stroke compared to those who drank no soda at all.  Smoking,  physical activity, alcohol consumption and calories consumed per day were also reportedly factored into the study. 
Research from the funded study was presented Wednesday at the American Stroke Association's International Stroke Conference in Los Angeles, CA.