I have a 13 year old son with Cf and type 1 diabetes, his blood sugars are always high, no matter how much insulin we add or how we manage the meals etc. Any suggestions? Sam just returned from a tune up, still has overly high blood sugars and complains often of lower back pain. He is not very active physically so I cannot figure out where the back pain is coming from, but something is telling me we are missing a clue to an underlying health issue.