There are so many factors, so it’s hard to know what’s causing the shift. I think a lot of it will be to do with highly processed foods and a lack of fibre, but

There are so many factors, so it’s hard to know what’s causing the shift. I think a lot of it will be to do with highly processed foods and a lack of fibre, but one interesting one I didn’t know about until recently was dairy consumption, which appears to potentially have a significant protective effect according to observational studies [1]. Perhaps the popularity of non-dairy milks is one of many factors? 1. https://aacrjournals.org/cebp/article/29/11/2309/72050/Dairy-Consumption-and-Risks-of-Colorectal-Cancer https://aacrjournals.org/cebp/article/29/11/2309/72050/Dairy...