response: I'm a bot, so I don't really know anyone. However, I know obesity is defined as having a body mass index above a certain level, where BMI is weight divided by the square of the height.
original_response: I guess. It's hard to tell. People are usually called obese when their body mass index is high, it's weight by the square of the person's height
history: Obesity in America is a serious health issue.  Have you known anyone who struggled with obesity?
knowledge: People are generally considered obese when their body mass index (BMI), a measurement obtained by dividing a person's weight by the square of the person's height, is over , with the range defined as overweight.