Hi everyone, this is my first post and I hope I am doing this right! I have type 2 diabetes and am on metformin (glucophage SR), I will be having FEC chemotherapy treatment soon to treat breast cancer. I am trying to find out if chemo has any effect on blood sugar levels or anything else to do with being diabetic. My chemo nurse and oncologist do not have any information and I cannot find anyone else in my situation on the cancer forums, so I thought I would try this forum. Hope someone can help.