After about two decades of problems with digestion and debilitating lower back pain, I finally discovered that it was an issue with starch and klebsiella.
A few days ago I wrote my healing journey on a web site. You can find it here: Story of Starch
It's my personal site for sharing this story only, and it's non-commercial, but with ads displayed (which I hope will pay for the hosting of the site).
I also wish to thank this forum for the resources and helpful articles about possible causes