Substantial reductions in body weight across body mass index (BMI) categories, as well as improved body composition, were achieved with tirzepatide (Mounjaro) in adults for chronic weight management, according to the latest results of the SURMOUNT-1 study.
The new analysis showed that up to 63% of participants achieved a reduction in body weight of at least 20%, and all three tirzepatide doses (5 mg, 10 mg, and 15 mg) led to substantial, clinically meaningful, and sustained body-weight reduction compared with placebo at 72 weeks of follow-up.
“This is staggering weight loss,” remarked SURMOUNT-1 co-investigator Louis Aronne, MD, Comprehensive Weight Control Center, Weill Cornell Medicine, New York Citye. “To put it in perspective, mean weight loss in people having Lap-Band surgery is 17%, mean weight loss for sleeve gastrectomy is 25%, and gastric bypass is 33%, which puts the effects of tirzepatide squarely in the realm of bariatric surgery.”
Tirzepatide is approved in the United States and the European Union for the treatment of type 2 diabetes but is not yet approved for obesity in any country. The manufacturer of tirzepatide, Eli Lilly, intends to seek approval for the drug as an obesity treatment from the US Food and Drug Administration (FDA), European Medicines Agency, and in other territories beginning in 2023.
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