Fasting and Blood Glucose

By Jason Fung, MD

What happens to blood glucose during fasting? Most of the time blood glucose goes down, but not to levels that are dangerous. However, sometimes the blood glucose goes up, in a variation of the Dawn Phenomenon.

Jason Fung, MD

Jason Fung, M.D., is a Toronto-based nephrologist (kidney specialist) and a world leading expert in intermittent fasting and low-carb diets.