CortisolCortisol release is increased in response to stress and low blood-glucose concentration. It functions to increase blood sugar through gluconeogenesis, to suppress the immune system, and to aid in the metabolism of fat, proteins, and carbohydrates. Cortisol, specifically, plays a role in metabolism. It stimulates the liver to increase the production of blood sugar. It also helps the body convert fats, proteins, and carbohydrates into usable energy.
As part of the body’s fight-or-flight response, cortisol is released during stressful times to give your body a natural energy boost. This boost is meant to fuel your muscles to respond to a threatening situation. But when cortisol levels are constantly high, due to chronic stress, these same effects may result in insulin resistance and type 2 diabetes.