Nearly one out of three young adults, ages 18 to 39, are prediabetic in Sacramento County, according to a new study from UCLA. And nearly a third of these people will develop full-blown type 2 diabetes in just five years.

On a statewide level, half of California’s population has either diabetes or prediabetes. The study, which was released Thursday, is the first of its type to look at prediabetes rates by county, age group and ethnicity.

Dr. Harold Goldstein is the executive director of the California Center for Public Health Advocacy, which commissioned the study. He says "this is the clearest indication to date that the diabetes epidemic is out of control and getting worse." He’s joining Insight to discuss the health implications as well as policy recommendations.