I suspect this may be an issue for me. A few years ago I have a long period of stomach cramps, endless wind and diarrhea. I cut out wheat just to see what happened as it worked! However a few months after that I was diagnosed with anxiety and depression and put on citalopram. I assumed that was the cause of the tummy problems as they went after that in spite of eating wheat again.
I recently read that wheat intolerance can cause depression itself and I have been a chronic depressive now since the first diagnosis and can't seem to stop taking the ADs for more than about 6 months without all the symptom returning with a vengeance.
I recently stopped eating wheat as part of a low-carb weight loss diet and my stomach problems have eased up a lot, I feel more energetic and my libido has made an unexpected and surprising return after years of being more or less AWOL.
Googling is just making me more confused. I am reluctant to see my GP as they seem to fairly dismissive and patronising about people investigating their own illnesses and I have been many times to complain about stomach pain, exhaustion and depression. I have more or less given up TBH.