When a person has more fat on their body than is healthy, they are considered overweight. In areas where food is in abundance and lifestyles are mainly sedentary, it’s common for people to be overweight. More than 1 billion adults in the world are overweight or obese.
The human body needs a minimal amount of fat to function normally. Small fat storage is used to function the immune, hormonal, and reproductive systems and provide energy. Once a person accumulates too much excess fat, their flexibility, movement, and body functions can become impaired. Their appearance will also be altered.