In my case, it’s always depression rather than anxiety. The cycle works the same, though. And, unfortunately, there IS a connection between your gut and brain. So the fight to diagnose my IBS was horrific. Add in fibromyalgia to the mix, and it turns into a Gordian knot no one wants to touch.
I’m still trying to find a decent gastrointestinal doctor. One that won’t respond to everything I say with the phrase, “Have you tried speaking with a psyhologist?”