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Novo Nordisk says semaglutide cut obesity rates in young children in trial

By Thomson Reuters Sep 7, 2026 | 5:47 AM

COPENHAGEN, Sept 7 (Reuters) – Novo Nordisk said on Monday that in a late-stage trial, 40.4% of children aged 6 ​to under 12 treated with semaglutide, ‌the active ingredient in its blockbuster weight-loss drug Wegovy, were no longer classified as having obesity after 68 weeks, assuming full adherence to the ‌treatment.

All ​patients enrolled in the ⁠trial, called STEP ⁠Young, received lifestyle modification throughout the trial, including a reduced-calorie diet and increased physical activity, Novo said in a statement.

“We ​are encouraged by the positive STEP Young results and semaglutide’s potential to help ⁠children living with ⁠obesity who need medical treatment, alongside ​lifestyle changes, to better manage their obesity,” ​Novo’s Chief Scientific Officer Martin Holst Lange ‌said.

Novo said the trial met its primary endpoint demonstrating superior body mass index reduction at week 68 in the group ⁠taking once-weekly subcutaneous semaglutide compared with the placebo group.

The overall safety and tolerability of semaglutide were ⁠consistent with ‌those seen in trials with ⁠adults and adolescents, it added.

Prescriptions for ​GLP-1 ‌weight-loss drugs among U.S. children ​under 12 ⁠have risen more than 300-fold since 2019, a study published Friday found, even though the drugs are not approved for that age group.

(Reporting by Louise Rasmussen, editing by ​Stine Jacobsen)