“…No, just every 10 years I would test myself. So you like orange juice? Oh yeah, when good stuff is available. It should be thoroughly ripened. The commercial stuff they are used to selling unripe oranges and so if they accidentally get ripe oranges they add acetic acid to it. For example the concentrated or canned varieties very often have acid added but the acid etches the enamel off your teeth so ripe oranges are safer in every way. So you would want to rinse out your mouth with clear water after orange juice?”