Anyone sufferinig from severe hunger pangs, which no foods helps.
I suffer those, lightheadeness, sweating, flushing, rapid heart beat (sometimes eating raisins or something sweet helps calm down), loss of weight. These episodes brings on extreme tiredness. No, its not psychological. <<smile>>
My A1C test came back normal, and my fasting blood sugar level came back normal.
I know of those who also suffered similar symptoms, tests were normal, and some years later, tests were abnormal.