TY - JOUR T1 - Glucose and insulin: A chicken or egg problem Y1 - 1969/12/08 N1 - 10.1001/jama.1969.03160360060014 JO - JAMA SP - 1914 EP - 1914 VL - 210 IS - 10 N2 - Does glucose control insulin, or does insulin control glucose? It all depends, as we shall see.Long before reliable methods for measuring circulating insulin were available, it was assumed that the familiar shape of the normal glucose tolerance curve was determined by a spurt of insulin secretion evoked by the hyperglycemia of glucose administration, and subsiding as the blood glucose fell after reaching its peak. The development and application of the immunoassay for insulin appeared to confirm this concept. On this basis, a reasonable view of the train of events would be: glucose load→hyperglycemia→ insulin secretion→limitation of glucose rise (peak) and trend toward normoglycemia→diminishing insulin secretion. Graphically, blood glucose and plasma insulin in the normal situation run parallel courses, but functionally they may change hats as the minutes go by. Certainly glucose is initially the prime mover of insulin; a little later, it would appear, insulin acts as the prime SN - 0098-7484 M3 - doi: 10.1001/jama.1969.03160360060014 UR - http://dx.doi.org/10.1001/jama.1969.03160360060014 ER -