Thank you for your thoughtful reply. Celiac disease is a serious matter and not the more frequent gluten intolerance that is so prevalent today. You are entirely correct about my case probably being related to chemicals in the wheat. I was diagnosed with ME/CFS in 1984 and I suddenly became reactive to all kinds of chemicals that had never bothered me before. We had our home treated for fleas with chlorpyrifos right before I became sick. I think the ME/CFS made me more vulnerable to developing Long Covid after having Covid twice in the same year. The symptoms of LC have been much more serious: A-fib and high blood pressure; hearing loss and eye involvement along with balance and walking problems.