Body set weight is tightly regulated. Most people’s weight remains relatively stable. Even people who gain weight tend to do so extremely gradually—1 to 2 pounds per year. This does not mean, however, that body set weight is unchanging. Over time, there is a gradual upward resetting of the body’s weight thermostat. The key to understanding obesity is to understand what regulates body set weight, why body set weight is set so high, and how to reset it lower.
