Your body maintains blood sugar during fasting through multiple mechanisms: the liver releases stored glucose (glycogenolysis), produces new glucose from non-carbohydrate sources (gluconeogenesis), and hormones like glucagon and cortisol regulate the process. Research by Cahill documented how humans remain functional through extended fasts because the body has evolved reliable systems to maintain glucose without eating. Blood sugar doesn’t crash—it’s carefully maintained.
This companion covers the fear versus reality, the three mechanisms (glycogenolysis, gluconeogenesis, ketone adaptation), hormonal regulation, what “low blood sugar” actually means, and the irony of frequent eating. (5 min read)