Negative Feedback Loop

A negative feedback loop is a feedback loop in which a system responds to s change by returning to its original state, or by decreasing the rate at which the change is occurring.

An example of a negative feedback loop can be seen through the levels of sugar in the blood stream after eating a candy bar. The graph below shows how Dr. Rood's blood sugar reacted to a candy bar. You can see the response and return to homeostasis over a period of time.