I saw something on TV about someone suffering hypoglycaemia and it was to do with some little benign nodule on the pancreas that made it produce too much insulin. This was reported as a 1 in 1000000 problem so might have nothing to do with you. Can tell you the nodule was removed and life went back to normal. The guy was a roofer and had to quit his job and stop driving because of the hypos and also put on lots of weight as he also had to eat all the time to stop keeling over. Not totally sure but think I watched it on a show called RPA (Royal Prince Alfred) which is on channel 9 (WIN) in Australia.