Why Do Weight Loss Trials See Success in the Placebo Group?

MedEvidence Articles

MedEvidence Articles
Why Do Weight Loss Trials See Success in the Placebo Group?
Jul 13, 2026
Benton Lowey-Ball

In this week's episode, we examine a little-known benefit of being in weight loss trials: the placebo effect. We look at data showing that most people lose weight in weight loss trials, even those who take no active medication, and explore how being on a placebo can improve markers of health. This helps underscore the importance of staying in clinical trials all the way to the end.

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