Yes, if you are diagnosed at a very early stage of emphysema, your body has a significant chance of reversing the disease IF you act quickly. This includes quitting smoking if you do. You also want to reduce your body's need for oxygen in any way possible. This includes losing weight if you are obese, and increasing your exercise. Some early stage symptoms of Emphysema are coughing and wheezing. Most cases are not caught until mid to end stages however, and these have a much lower chance of the damage being reversed. There are many treatments available for these patients that can both increase the quality of life and increase the life expectancy.