I've read some reports that soda can cause pancreatic cancer. Is this true? Has it been proven?

I don't believe it. My physician-colleagues disagree among ourselves about whether aspartame is a health threat of any kind, but i've seen nothing to make me believe it can mutate genes. I saw the 2010 prospective study on the sugary stuff & was underwhelmed -- the numbers are small, there's no obvious mechanism, some confounding variable seemed likely. Why not some nice fruit juice instead?