I disagree with one point about the depression being ONLY caused by the nutritional deficiencies associated with gluten problems. In Brain Allergies by Philpott and Kalita they say that brain inflammation can cause neurological problems. This inflammation can relate back to the nutritional deficiencies but I think it should be seen as a speratate issue.

I think malabsorption is not the only problem. Of course the infllammatory response may be mitigated by the right nutritional support, but that inflammation can cause problems in the brain. I am not sure what the difference in symptoms would be from having brain inflammation vs. having some vitamin b deficiencies.

But I think this problem is a bit more complex than just malabsorption starting the brain.

But taking just vitamin b6 is not enough for brain chemistry to imporve. Niacin is also needed to help improve serotonin levels.