i am type 3c and have recently had a Whipples procedure in which the head of my pancreas was removed. It was in any case calcified so not fully functioning. As expected my blood sugar levels are all over the place. When I saw my GP about this he said I shouldn’t be taking Metformin because my BMI is under 24 ( it is 18 ) . He upped my Gliclazide but this has made things worse and he said I would end up on insulin anyway because of the Whipples. I can find nothing on the internet about Metformin and BMI so has anyone else ever been told of this or heard of this link?