Artificial sweetener may interfere with immunotherapy | Damon Runyon Cancer Research Foundation
17 Dec 2025
https://www.damonrunyon.org/discovery/artificial-sweetener-may-interfere-immunotherapy
Artificial sweetener may interfere with immunotherapy | New Discoveries
New research from Damon Runyon-Dale F. Frey Breakthrough Scientist Abigail E. Overacre-Delgoffe, PhD, and her lab at the University of Pittsburgh suggests that sucralose—the sugar substitute found in many “sugar-free” sodas, yogurts, and snack foods—may interfere with cancer immunotherapy. Their findings indicate that the widely used artificial sweetener changes the composition of the gut microbiome in ways that weaken patients’ immune systems and blunt the effectiveness of immune checkpoint inhibitors, a class of drugs that unleash T cells to attack tumors.





