Breastfeeding is also a possible cause, although I think there's evidence that's pointing in both directions. "They found those who were breastfed as infants h

Breastfeeding is also a possible cause, although I think there's evidence that's pointing in both directions. "They found those who were breastfed as infants had a 23 percent greater risk of developing colorectal cancer as adults. Even more troubling, a younger group within that cohort exhibited about 40 percent increased risk of developing high-risk colorectal cancer before they turned 55." Breastfeeding rates have increased from ~30% to ~70% between 1970 and 2010. https://news.harvard.edu/gazette/story/2023/10/study-finds-link-between-breastfeeding-rise-in-adult-colorectal-cancer-risk/ https://news.harvard.edu/gazette/story/2023/10/study-finds-l...