Why does blood sugar spike in the morning even before eating?
The blood sugar can spike in the morning even before eating due to dawn phenomenon. "Dawn phenomenon occurs as a natural spike in blood sugar in the early morning...between...2 am and 8 am," consultant dietician Kanikka Malhotra said. "It's initiated through body’s overnight release of hormones like cortisol...which increase...the production of glucose and body’s resistance to insulin," she added.