Hi, I have had MAC for at least 5 years..I also have bronchiectasis for years.. My bronchial tubes bleed on occasion and I am put on antibiotics for infection. Does anyone here have MAC, and has not had any treatment? I am not sick. I have not had ct scan for 2 years. I switched doctors, and feel like I am not any better off than I was with the old doctor. I have lost weight, and I am tired, but my son passed away suddenly, and I can't really cope with the loss. I have had 2 other mycrobacterium, abscessus, and kansasii, so I do now how sick I can get. I had part of right lung removed, and 18 months therapy. I always thought I was so lucky that I didn't have MAC..I saw plenty of women at National Jewish with it. Is treatment always started when MAC is found? My old doctor said it is like "moss on a tree" if it isn't hurting the tree, leave it alone. That is one reason, among many that I left. Sorry this is long. Thanks in advance for taking time and reading it. Cathln.