High cortisol levels cause fat to be deposited in your abdomen, and insulin and cortisol rise and stay elevated. In the case of insulin, your muscle cells now don’t recognize its signal. Once your cells stop responding to insulin (called insulin resistance), your pancreas must produce 10 times as much of the hormone to shuttle sugar into cells, Your brain doesn’t recognize increases in insulin either, so it never responds by turning off your appetite. As a result, blood glucose is even more erratic than during metabolic overdrive, alternating from very high highs to very low lows, and you’re constantly hungry. High insulin levels tend to lower levels of other important hormones too, which can erode health in many additional ways.
Your sleep is probably starting to become erratic. You may feel okay when you are at work and under stress, but you crash when you get home or go on vacation. Elevated levels of cortisol during the overspending stage have now taken a toll on various bodily tissues, slowing metabolism through a loss of muscle mass, impairing digestion, and weakening immunity.
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