A high-fiber, plant-based diet may help delay the progression of precancerous plasma cell disorders into multiple myeloma , according to new research led by investigators at Memorial Sloan Kettering Cancer Center (MSKCC). The pilot clinical trial showed the dietary intervention improved body weight, metabolic health, and gut microbiome composition in patients with precursor conditions to multiple myeloma.

The findings were presented at NUTRITION 2025, the annual meeting of the American Society for Nutrition, held May 31–June 3 in Orlando, Florida.

“With cancers being detected earlier and precancerous states identified more frequently, there is a growing opportunity to understand how modifiable risk factors—like diet and lifestyle—affect cancer progression,” said presenting author Fran

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