Scientists search the microbiome for clues to the rise in colorectal cancers
killer [among people under 50](https://pressroom.cancer.org/under-50-mortality-declines#:~:text=The%20study%20also%20found%20that:%20*%20CRC,third%20in%20women%20in%201990%20and%202023) — even as death rates decline [in older age groups](https://acsjournals.onlinelibrary.wiley.com/doi/10.3322/caac.70067).
[](https://www.npr.org/sections/health-shots/2024/03/18/1238939706/ultra-processed-food-junk-food-disease-cancer-anxiety-depression-diet)