In 2014, Dr. Ankur Vyas from the University of Iowa Hospitals and Clinics 12 presented a study following 59,614 women over 8.7 years in the Women’s Health Initiative Observational Study. The study found a 30 percent increase risk of cardiovascular events (heart attacks and strokes) in those drinking two or more diet drinks daily. The benefits for heart attack, stroke, diabetes and metabolic syndrome were similarly elusive. Artificial sweeteners are not good. They are bad. Very bad.