Frequently Asked Questions:
- What was the SCENARIO trial?
SCENARIO was a multicenter, randomized, single-blind trial of 200 patients with obesity who had a minor ischemic stroke or TIA. It compared a 15-week structured weight reduction program with a 1-hour nutrition education session.
- What did the SCENARIO trial show?
At 24 months, the weight reduction program lowered the risk of recurrent stroke or TIA, myocardial infarction, death or hospitalization for unstable angina by 67% compared with the control group (relative risk, 0.33).
- Which patients benefited most from weight reduction after stroke?
Patients younger than 65 years, those with an mRS score of 0 to 2 and those with metabolic syndrome showed the greatest benefit.
A structured weight-loss program lowered the rate of recurrent vascular events in patients with obesity who had a minor ischemic stroke or transient ischemic attack (TIA). The findings come from the SCENARIO analysis, a trial which was presented during the 2026 World Stroke Congress held in Seoul, South Korea.¹
Obesity is a known risk factor for cerebrovascular disease, but there is little evidence on whether deliberate weight loss improves outcomes after a first event. Yaroslav Winter, MD, MSc, head of Mainz Comprehensive Epilepsy and Sleep Medicine Center at Johannes Gutenberg University, presented the multicenter results, which address this gap in secondary prevention.¹
How Was the SCENARIO Trial Designed?
The randomized, single-blind, controlled trial enrolled 200 adults with obesity who had a TIA or a minor ischemic stroke, defined as a modified Rankin Scale (mRS) score of 3 or lower.¹˒² Participants were randomly assigned to a 15-week structured weight reduction program or a single 1-hour nutrition education session.¹ The primary composite end point included recurrent stroke or TIA, myocardial infarction, death and hospitalization for unstable angina.
Did Weight Loss Reduce Recurrent Vascular Events?
At 24 months, patients in the weight reduction arm had a significantly lower risk of the composite end point than the control group (relative risk, 0.33; 95% CI, 0.13-0.83; P = .02).¹ Investigators also reported significant improvements in functional outcomes, body measurements, blood pressure and lipid levels with the intervention.¹
The benefit was greatest in 3 subgroups: patients younger than 65 years, those with an mRS score of 0 to 2 and those with metabolic syndrome.¹ Winter and colleagues concluded that structured weight management may help prevent secondary stroke in this population. They added that an individualized approach is needed to get the best results.¹
What Do the Findings Mean for Secondary Stroke Prevention?
Clinicians now have more options for weight management, and these results suggest structured lifestyle programs may deserve a place alongside medications for controlling risk factors after a minor stroke or TIA. The full results, including absolute event rates and details of the intervention, have not yet been published.
Editor’s Note: This transcript has been edited for grammar and clarity using artificial intelligence tools.
