LOS ANGELES — More than half of Americans are overweight or obese, according to a new report released Tuesday by the Centers for Disease Control and Prevention (CDC).

Obesity is defined as a body mass index (BMI) above 30 and a waist circumference (WC) above 80 inches.

The CDC released the findings based on the latest data from the National Health and Nutrition Examination Survey, or NHANES, a nationwide survey of Americans conducted by the U.S. Centers for Medicare and Medicaid Services.

For the first time, the CDC found that Americans who are obese are twice as likely to be older than 40, and three times as likely as other age groups to have diabetes, hypertension, or heart disease.

About a third of Americans report being overweight or severely obese, the study found.

About 14 percent of those who are overweight say they have an eating disorder, according the report.

Nearly half of those obese individuals also report being depressed.

About 12 percent say they smoke cigarettes or smoke tobacco, and more than 5 percent say their diet is unhealthy.

The CDC says obesity is the third-leading cause of preventable death in the United States, behind heart disease and cancer.

Obesity has increased among people of all races, ages, income levels, and educational attainment.

In 2016, Americans aged 50 and older made up about 11 percent of the U:population, but were 35 percent of obese Americans.

Obese adults were more likely than other adults to smoke cigarettes, to have hypertension and diabetes, and to have high cholesterol and high blood pressure.

In 2016, the rate of diabetes increased to 6.3 percent from 4.6 percent in 2015.

The rate of obesity was 4.5 percent, and the rate for obesity and diabetes was 2.9 percent.