I never realized that there was a difference in AI
and Adrenal fatigue. Mine must be fatigue. I have always been lean and fit, no weight loss, and I do exercise on a regular basis, just big shifts in energy, mood, etc., and very wierd symptoms when my T3 wears off. I tend to get most of my AF symptoms on days my thryoid meds are off (I have 20 AF symptoms, so I am confident that this is what I am dealing with).