Positives

• One patient said a week-long water fast made their brain fog disappear and nearly cleared the rest of their symptoms Reddit.
  
  
• A patient said 18:6 intermittent fasting improved them significantly within five days Reddit.
  
  

Negatives

• A patient said fasting helped some things but made others worse Reddit.
  
  
• The patient who improved dramatically with one water fast later said repeat fasts had much less effect Reddit.
  
  

Hurdles & Side Effects

• Community reports vary widely by protocol, from time-restricted eating to multi-day fasting, so results depend heavily on the exact method and can be inconsistent even in the same person Reddit.