IgA Deficiency Support Group
Selective immunoglobulin A (IgA) deficiency is a relatively mild genetic immunodeficiency. People with this deficiency lack immunoglobulin A (IgA), a type of antibody that protects against infections of the mucous membranes lining the mouth, airways, and digestive tract. It is the most common of the primary antibody deficiencies.
I'm not saying you shouldn't as I largely avoid both as well but can't say much has changed, I tend to just eat organic spelt now and then and pretty much no dairy.