@hrhwilliam:
Or perhaps research should ask whether sugar can accelerate the growth of an already existing cancer. In a PET scan the radioactive sugar material is quickly absorbed by any cancer cells that may be present. The radioactive sugar solution lights them up and that is how their presence can be detected. In the absence of conclusive cause and effect evidence the safer approach is to eat a diet that keeps sugar and artificial sweeteners low. Everyone is free to choose as they want while scientists debate the issue.