12/10/2025
UPFs now make up more than 50% of the American diet, and their link to colon cancer - especially in people under 50 - is becoming increasingly clear. Kudos to my colleague Dr John Marshall for helping to spread the word about the importance of diet and the gut microbiome. Replacing just 10% of UPFs with unprocessed plant fiber - an apple instead of a bag of chips, a handful of nuts instead of a protein bar - can make a huge difference