Overweight or obese?
The definitions of overweight and obesity use the body mass index (BMI), calculated using a person's height and weight, to define the bulk or mass of the body.
A person is considered normal weight with a BMI of from 18.5 to 24.9.
Overweight is from 25 to 29.9 BMI.
Obesity is a BMI of 30 or higher.
Morbid obesity is a BMI over 40.
In Washington state, 58 percent of adults are either overweight or obese, meaning they have a BMI of 25 of higher.