The four-part HBO documentary “The Weight of the Nation” will be screened July 9 at the Porter Sanford Performing Arts Center in Decatur as part of the DeKalb Board of Health’s ongoing efforts to combat obesity in the county.

The screening starts at 7 p.m. and will be followed by a comprehensive discussion and Q&A session. Participants will receive tips and materials for managing a healthy lifestyle.

Among DeKalb adults, 35 percent are overweight and 24 percent are obese. Blacks are significantly more likely to be overweight or obese than whites, the 2010 Status of Health in DeKalb Report shows. A risk factor for diabetes is being overweight or obese.

“The Weight of the Nation: Confronting America’s Obesity Epidemic” took three years to make. It features case studies and interviews with leading experts and individuals and families struggling with obesity.

The screening will be preceded by a reception at 6 p.m.

Space is limited and registration is required at www.OneDeKalb.com.

The center is at 3181 Rainbow Drive.