Return Of The Aphthous Ulcer

So today I woke up with an aphthous ulcer in my lip – bummer. Now I try to backtrack what I did yesterday what might have been different:

• I used a different brand of toothpaste yesterday morning (I have not used that brand for some time now).
• I had a long test, which was a bit stressful (but not overly stressful).
• I increased my sugar intake yesterday afternoon: six cubes of sugar and a banana (both of which I had avoided the weeks before).
• The banana was quite ripe. It was OK, but not quite ripe (the peel was only yellow, not getting black yet).
• In the evening I ate a liverwurst (the brand of liverwurst was fine the last time, and they declared everything to be pork).

Out flies my theory about as dairy being the sole cause of aphthous ulcers… I still have much much more seldom aphthous ulcers than I used to have, so what ever it was, I have reduced it.

So was it the toothpaste, the stress, the sugar, the banana or the liverwurst? Damn, if I knew… At the moment I tend to go with the toothpaste theory, closely followed by the banana. The liverwurst might have been a problem, but I think the stress and the sugar are unrelated (but I am not sure).

Damn, damn, damn.