Most leaders I work with assume that if the science is strong enough, the outcomes should follow. Powerful intervention in… better results out. But the evidence suggests it’s not that simple. A large real-world study published in JMIR followed over 126,000 adults with obesity who were prescribed tirzepatide and enrolled in a digital weight-loss service ( J Med Internet Res, 2026 ). What the researchers explored wasn’t a new drug mechanism… but something far more human: enga