I can never really take the results of nutritional epidemiology studies too seriously. How can you possibly control for all the confounding variables? People wh

I can never really take the results of nutritional epidemiology studies too seriously. How can you possibly control for all the confounding variables? People who are avoid artificial sweeteners likely make many other decisions in their diet and lifestyle. It's a healthy user bias. The study controls for some factors like weight and smoking but there's just no way to control for everything, you need randomization - especially when the final hazard ratios are ~1.15.