I am a 77 yr old female and in fairly good health. Am overweight and suffer from Rheumatoid arthritis as well as osteo arthritis. In the last several years I have become more and more out of breath with the least little effort or exertion. My heart has been checked out thoroughly and there is no problem there. What could be other causes and what kind of doctor should I see?

Summarized question: How to cure rheumatoid arthritis and osteo arthritis?