Originally Posted by MauiKai
If you go back and read the article you will see they addressed that. It says "You might say that people who are overweight and just about to get diabetes drink more diet soda, but they scientifically controlled for body weight. And they found the artificial sweeteners increased diabetes independent of body weight!"
There's also a legitimate concern called "healthy user bias" in epidemiological studies. Diet sodas have been marginalized nutritionally for decades. People who are actively trying to be healthy usually steer clear of them for that reason (whether or not that is actually true) so naturally people who drink the most diet sodas are also the ones who may smoke, do no exercise, and eat junk food. What I'm saying is that without knowing how diet sodas actually cause diabetes and with only evidence from epidemiological studies (which provide very tenuous evidence in nutrition science) it's not reasonable to stop drinking two diet sodas a day.