Ii was diagnosed with COPD. The symptoms disappeared when I stopped eating grains, especially WHEAT. I can however eat some of the grains if they have not been processed in the same facility wheat is processed. There is no problem for me with "ancient grains" such as Quinoa, amaranth, etc) I understand that any are affected by our modern "wheat" including development of rheumatoid arthritis and arthritis and other symptoms, even depression and mental illness.