Instead of shrinking fat cells, a new shot removes them — and early trials point to less fat coming back

Most weight-loss treatments shrink fat cells, leaving them ready to swell again. A new injection called CBL-514 tries the opposite: it prompts a group of fat cells to quietly remove themselves, so fewer are left to refill. In two early (phase 2) trials with 107 and 173 volunteers, most people lost fat just under the skin. In a smaller follow-up look at 41 people, injections for up to 12 weeks cut the deeper fat stored around the organs — the kind linked to blood pressure and cholesterol problems — by about 12% on average, while the placebo group gained about 5.7%. In rats, pairing the shot with the GLP-1 drug tirzepatide also meant less weight returned after treatment stopped. The honest catch: these results come from a conference presentation and company announcements, not yet a peer-reviewed study, and independent experts say bigger, longer trials must show the loss lasts and stays safe. That work is now being planned.

SDG 3 · Good health and well-being — Mechanism: tech innovation