This at at the heart of the matter. Like Dr Davis, once I gave up wheat, I changed. Same with him and same with you.
We have to ask why the epidemic has taken hold in the last 50 years. There has to be a trigger or a series of triggers.
In this time, the "Eat Healthy Grains" has been the standard health advice. Since then the epidemic has got worse.
Have you tried to give up grains and wheat in particular? Try it for a month and see what happens.