Ha I have a kind of funny update on my post above. I was taking some cod liver oil to try and heal a cavity I saw forming (I thought) in one of my back molars. I finally went to the dentist because it didn’t seem to be changing, and it turns out it’s a spot of an old (white) filling where there is a rare situation of some decay occurring within the filling itself (apparently this can happen if there is an air bubble and something gets in). So I was trying to grow back enamel where only filling existed. CLO fail. I could have taken it in by the cupful with no success (thankfully I did not try this). Good news is, no real cavities!