Will I have to use this diet for the rest of my life? Can I go back into the sun after two years?
You will be able to eat pretty much what you want (short of supplimentation, of course) after a few years on the MP. Once the CWD bacteria are out of your system, you can return to a normal lifestyle, with normal amounts of sun exposure. Sunbathing is not recommended, but day to day exposure should be fine.
It may take more than 2 years, however. Don't try to rush it or put time limits on it; it takes however long it takes to get rid of the bacteria.
____________________ I can help you understand the recovery process, but only your physician is licensed to give you medical care.