Answer:
Obesity is the problem of being too heavy for your height and your health is affected by it. Elaborated, it means to be too overweight. or just straight out known as being fat. It is considered a disease and has been described as an epidemic.
What is an epidemic?
Google definition:
"An epidemic occurs when an infectious disease spreads rapidly to many people. For example, in 2003, the severe acute respiratory syndrome (SARS) epidemic took the lives of nearly 800 people worldwide."