I seem to have traced the sudden episodes of extreme fatigue, which I have suffered for years, to eating supermarket uncut white bread. The past twice I have experienced this - which I would describe as a total shutdown leaving me almost comatose - I have had a cheese sandwich made with this bread about half an hour previously. I have been Googling yeast allergy/intolerance, and it seems that it can also manifest with a similar reaction to wine, which I get (particularly red wine in my case). I had never linked to two things before.
Where do I go from here? Does this sound likely? There could well be other things affecting me - I'm sure there are in fact. What are other likely culprits, other than the obvious bakery-type things? Should I go to the doctor?