any vinegar or lemon juice being acid on glazes is not good either
old bathtubs can be bad for lead in the porcelain which is exposed when the glaze wears away, a rubber bath mat helps here, i stick it to the side of the bath so it keeps dry when not being uses which reduces the chance of fungus living on it.
am switching to glass for tableware, the pyrex 9 inch/22 cm pie plate makes a very good dinner plate and the lip means it can double as a dessert plate. pyrex is 100% lead free.