@tracy111869 Thanks for your response. I've had MAC for at least 7 years and hope never to do the big 3 therapy. Trying everything to stay healthy. I am also an avid walker...at least an hour a day at a brisk pace. (big believer in exercising the lungs and body.) Glad you are doing so well. Oh...what about the vinegar? I was using it to keep my blood sugar levels down but am not regular with it. Do you see positive effects on your health...on your lungs? Sending My Best wishes....Kate