Obesity is one of the most common and damaging health conditions in our society today. Americans are fighting this problem of obesity and although it is a tough battle it is a battle that needs to be fought and won. In particular, child obesity is a huge epidemic that has truly concerned many health professionals and government officials. The rates have increased dramatically over the past few decades and it doesn't seem that they are improving. One of the most useful medical and health devices to be used to monitor the health of these children who suffer from obesity is actually a device known as a pulse oximeter.