My suggestion is to talk with an experienced physical therapist and nutritionist. I think PT would be hard on the hands and arms. There are career paths in all fields that we may not realize. For instance, you can go on to manage a physical therapist office so your patient hours are limited but the flip side is the amount of desk work increases with being a manager.

If you live near a physical therapy program and/or a nutrition program, try to make contact with an instructor. They're experienced in the field and have chosen to become instructors.