[Hytosys]

I've been suffering from these blasted things for 18 years, and have similarly noted the same sorts of correlations. My best efforts: cutting out gum; cutting out sharp foods; cutting out acidic foods; taking vitamins B-12 and C, L-lysine, and zinc; switching toothpastes and brushing techniques. I regret not recording my history of occurrences, but I perceive things are improving. At the very least, it's safe to say the cause of canker sores is multi-factorial.

Sorry, I'm rambling. No one in my life can relate, so I'll take any chance to talk about it.

[hncomment]

You reminded me: I switched years ago to SLS-free toothpaste (Biotene), because that's supposed to help. And for many reasons, I now eat way less sugar and sugary drinks. Maybe because of those changes, or just age, I get canker sores much less frequently. When I was younger, it was maybe 2-3 times a year, and sometimes 2 at once. Now I go a year or two between single, smaller ulcers. Good luck!

[NIL8]

I can relate. You're probably right about them being multi-factorial, but changing toothpaste has been the biggest help to me. I use baking soda most of the time and have avoided these sores for years.