What's the average lifespan of a MS patient?

The textbook answer to this question is that people with MS live near normal life spans. How they have the ability to say that I have no idea since the CDC does not keep statistics on people with MS. A very good friend of mine just lost her mother who has MS. She was 77 years old. I have had MS for 20 years. Some of the people in the MS group that I used to attend were older than Father Time. So I wouldn't get concerned about checking out early. The chances of that are extraordinarily slim. You take good care.