Obesity has reached epidemic levels in America, affecting over 70% of the population. In that past, when a patient received a typical physical checkup, their doctor checked their blood pressure, heart rate, temperature, and respiratory rate. Now, since we’ve seen such a high rate of obesity in the United States, physicians check each patient’s BMI as well. It is the second leading cause of preventable death in the U.S. and has a 50% chance of reducing life expectancy. Obesity has three definitions: