CFS is linked to Mono-Sodium-Glutamat (Natrium Glutamat) and artificial sweeteners intake.
Even if you read labels you are being poisoned against your will, because they come under many names.
You should try a ten day "diet" of taking NO Mono-Sodium-Glutamat (Natrium Glutamat) or Sweeteners at all. Real Sugar is OK. Real normal food is OK.

To make sure that it works, of course you shouldn't have ANY Mono-Sodium-Glutamat (Natrium Glutamat) or ANY Aspartame, Splenda etc....at all.
Cook everything yourself. Drink only water or fresh juice or tea or coffee THAT you have tested (NO instant beverages!!!).
ANYTHING ready made is full of MSG or sweeteners!
Pack lunch boxes if you leave your house in the day. Prepare a snack ready for when you come home famished so that you do not eat something poisoned because you are too hungry to wait for your food to be ready.

TEST everything that will go into your mouth!!!!!!!!
I repeat
TEST everything that will go into your mouth!!!!!!!!

You will find my posts and my Test (no money involved) on the MSG Debate Forum.
Good luck to all :) :) :)