I never drank much soda, diet or otherwise, and yet developed pancreatic cancer at age 60. I stayed away from junk food, too, and ate lots of fruits and veggies. I was obese for years, though, from overeating, especially foods high in sugar content, so I think that was the cancer trigger for me, but I know that there are lots of folks who maintained healthy weights and still got PanCan. I suspect the triggers are environmental carcinogens.