All good, I suppose some combination of the right amount of fiber, water, and exercise the key (along w good genetics and good gut flora conferred at birth). I suspect we all eat too rich a diet, which has its own kind of health benefit (better than starving like our ancestors) yet causes the inflammatory diseases late in life. My attempt at understanding gut flora:

https://scottvern.medium.com/an-imagined-interview-with-the-gut-brain-bb52d2af3d45