Biochemist here: I would advise to exercise strong caution when looking at dietary changes in the context of MS.
A lot of advice gives people the illusion that they have more control over their illness than they actually do, and a lot of the diets cause unnecessary harm (as a heuristic: the more things you cut out, the higher the potential for harm).
That said, healthy eating and regular physical exercise is always a good idea, and even more so if you have any existing illness.
A lot of scam diets promise to cure MS. Books are sold. But the only real way to lessen the harm of the disease is through a combination of a modern medicine and luck (I've had both).
Agree on the general healthy eating and activity, though.
A lot of advice gives people the illusion that they have more control over their illness than they actually do, and a lot of the diets cause unnecessary harm (as a heuristic: the more things you cut out, the higher the potential for harm).
That said, healthy eating and regular physical exercise is always a good idea, and even more so if you have any existing illness.