I was recently diagnosed with selective IgA deficiency, my IgA is zero in blood and also in my gut. This could explain why I have had tons of sore throats, diarrheas and other lining infections through my life. I suspect that this could be the cause why my gut health is so poor and maybe this is leading to my ME/CFS. I know mainstream medicine offers no solution for IgA deficiency but is there maybe something out there that could increase IgA? Does anyone here also have low IgA?