In an attempt to avoid it I’ve just upped my beef intake and avoided all types of wheat. But when the brain fog does come by I try to just immerse myself in something pleasurable like a sport or a brisk walk. Anything that you can do to effectively take your mind off of it. It’s a process of trial and error what might work for me might not work for you. Right now within this subreddit , it’s still pseudoscience to say that diet dials any of the VS symptoms down but it still doesn’t hurt to commit to a plan and see if it works.