One kind of bacteria can cause colon tumours, while lacking another kind of microbe may lead to ulcerative colitis, an inflammatory bowel condition
Source:
https://www.newscientist.com/article/2235508-gut-bacteria-may-be-responsible-for-bowel-disorders-including-cancers/?utm_campaign=RSS%7CNSNS&utm_source=NSNS&utm_medium=RSS&utm_content=home