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Childhood Obesity Increases Adult Disease Risk, Even Without Early Metabolic Complications

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Children with Obesity Face Significant Long-Term Health Risks, Even if Metabolically Healthy, Karolinska Institutet Study Finds

A new study from Karolinska Institutet, published in JAMA Pediatrics, indicates that children with obesity, even those without immediate metabolic complications, face a significantly elevated risk of developing type 2 diabetes, high blood pressure, and abnormal blood lipid levels later in life. The research also highlights the substantial benefits of obesity treatment for these children.

Understanding the Study

The study followed over 7,200 children aged 7-17 who underwent obesity treatment in Sweden, tracking them until age 30. Researchers compared outcomes among three distinct groups:

  • Children with metabolically healthy obesity (MHO).
  • Children with obesity and impaired cardio-metabolic risk markers (MUO).
  • Peers from the general population (control group).

Alarming Long-Term Risks Uncovered

By age 30, the study revealed significant disparities in health outcomes across the groups:

  • Type 2 Diabetes: 9% of MHO children developed type 2 diabetes, compared to 17% of MUO children and a mere 0.5% in the control group.
  • High Blood Pressure: 11% of MHO children developed high blood pressure, versus 18% of MUO children and 4% in the control group.
  • Abnormal Blood Lipids: 5% of MHO children and 13% of MUO children developed abnormal blood lipids, compared to 1% in the general population.

"Even children with obesity who show no signs of cardiometabolic impact have a clearly increased risk of future diseases, meaning normal initial test results do not guarantee protection against future health issues."
— Emilia Hagman, associate professor at Karolinska Institutet.

The Critical Role of Early Treatment

All participating children received support for healthier lifestyle habits. The study found that a positive response to treatment during childhood significantly reduced the risk of all diseases investigated, with equally significant effects in both the MHO and MUO groups.

"These results suggest all children with obesity require treatment, even if they appear healthy upon initial examination."
— Claude Marcus, Professor at Karolinska Institutet.

The study utilized data from Sweden's national quality registry BORIS and other health data registries.