In this podcast, Dr. Berg talks about fasting and stem cells. A stem cell is a cell that doesn’t have a purpose yet, it turns into something when the body needs a certain cell. There are certain parts of the body that can turn over cells very quickly, some would take longer and others wouldn’t. What triggers stem cells is prolonged fasting for 72 hours or even longer. The fat-burning effect that occurs in fasting really helps to fuel the stem cells.