Sucralose Artificial Sweetener Reduces Cancer Immunotherapy Effectiveness Through Gut Microbiome Disruption
- University of Pittsburgh researchers found that sucralose consumption is associated with worse overall response and progression-free survival in cancer patients receiving anti-PD-1 immunotherapy.
- The artificial sweetener disrupts gut microbiota, leading to depletion of arginine, an amino acid essential for T-cell function and anticancer activity.
- Mouse studies demonstrated that arginine or citrulline supplementation can restore immunotherapy effectiveness even when sucralose consumption continues.
- The findings, published in Cancer Discovery, suggest a potential therapeutic strategy to counteract dietary interference with cancer treatment without requiring patients to eliminate artificial sweeteners.