I have a question regarding radiation brain, although I have only received RAI. Since my total thyroidectomy and radioiodine treatment two years ago, I feel as if my brain is mush. Brain fog, short-term memory loss, inability to focus/take in new informat

Check your levels. Have your ENT or Endocrinologist check your thyroid levels, etc - they may be the culprit. It's a common complaint: https://www.inspire.com/groups/thyca-thyroid-cancer-survivors-association/discussion/memory-loss-after-thyroidectomy/ When you achieve the proper level (or as close as possible) I expect you'll feel these troubles minimize or go away. Best!