A new federal estimate shows a rise in prediabetes among American adolescents, a finding that is spurring concerns about the health of U.S. children — and the way Trump administration health officials are conducting research and communicating information, experts said.

In 2023, nearly 1 in 3 U.S. youngsters ages 12 to 17 had prediabetes, according to recently released data from the U.S. Centers for Disease Control and Prevention. That is far higher than a previous estimate that the condition affects about 1 in 5 kids.

There’s no question that prediabetes in U.S. youth is a serious concern. The condition puts them at risk for developing Type 2 diabetes, plus heart disease, stroke and other metabolic problems.

But scientists who study and treat diabetes noted that CDC officials released only a 600-word online summary of their new findings — not the raw data nor a peer-reviewed published paper describing how they arrived at the new figure. The agency also changed the methodology used to calculate the higher estimate without a detailed explanation.

That underscores questions about the accuracy of information being released by America’s top public health agency following widespread staff cuts in recent months, experts said.