SAMA HOOLE: . . . the largest study that's ever been done on fiber and colon cancer, the Nurses' Health Study, found that eating fiber increased the risk by 35%. Given that fiber increases cell division in the colon, that's not a surprise.

The 1999 Nurses' Health Study analysis of 88,757 women found no overall link between total fiber and colorectal cancer risk (RR 0.95 for highest vs. lowest intake), but high vegetable fiber consumption was associated with a 35% elevated risk (RR 1.35).  https://t.co/TGrV2KYjqS

— Kra-Ting Dee (@Krating_Dee) October 27, 2025