posted 9 years ago
Hi John,
No, I am not saying that raw milk causes tooth decay. As I said, foods with a pH of below ~5.0 to 5.7 have been found to damage teeth due to acid erosion. Milk has a much more neutral pH. As I stated in my previous post, it's also great for remineralizing the tooth surface, so in my opinion raw milk is a winner when it comes to dental health, in people who tolerate it well.
As for kraut juice, acidic foods are usually less of a problem than acidic drinks, because they don't bathe the teeth in the same way, and people don't tend to go around sipping on them all day. But yes, if a person were to go around drinking straight kraut juice, the acidity can damage their tooth enamel. Teeth naturally remineralize and certain dietary and lifestyle factors make them less susceptible to decay, so if a person is otherwise healthy and eating a good diet, it is unlikely that drinking kombucha or kraut juice (much less eating fermented foods) is going to cause tooth decay on its own, as I said before.
Tooth decay actually does seem to pre-date fermentation of foods by humans, at least as a widespread phenomenon. Fermentation is mostly a Neolithic phenomenon, whereas there is evidence of tooth decay going back at least 14,000 years, well into the Paleolithic. But anyway, I'm clearly not saying that fermented foods are the only things that cause cavities, so the relative dates are pretty much irrelevant. Clearly the mere absence of modern foods is not enough, on its own, to ensure healthy teeth for everyone, or we wouldn't find hunter-gatherers with cavities.
However, most modern people do have teeth that have already been compromised from a lifetime of bad eating and lifestyle factors and have chronically compromised immunity, poor diets, chronic exposure to environmental toxins, and a host of other issues. As I mentioned, I know many people who have found that a change in diet to a Weston A. Price style of eating has not been sufficient to allow them to enjoy acidic drinks such as kombucha without compromising their dental health. I am very glad that it worked for you, but that doesn't mean that it will work for everyone. In addition, there may be people reading this thread who do not follow your preferred way of eating for personal, religious, or ethical reasons, and who still want to enjoy kombucha without messing up their teeth.
Of course modern junk foods and sugary drinks are terrible for teeth and for our bodies in general. Kombucha is certainly healthier, and obviously I drink it myself. I am not a fan of many modern dental practices; I mostly dealt with "alternative" dentists when I could find them, and all of them took nutrition very seriously and discussed it with their patients. When I hear report after report (from dentists and patients) that they had exchanges in which the dentist looked at their teeth, said, "You've started drinking a lot of kombucha, haven't you," and turned out to be correct, that holds some weight with me.
I have read Nutrition and Physical Degeneration. I have a lot of respect for Weston A. Price. I've read Sally Fallon's stuff as well, and Ramiel Nagel's. I don't recall reading anything there that contradicts the finding that acidic drinks of a pH less than 5.0 or so challenge tooth enamel and make it more susceptible to abrasion, but my memory is of course not perfect, and if you'd like to post a specific quote or something similar to discuss I'd be happy to.
In any case, the measures I suggested in order to minimize tooth sensitivity and possible damage to the enamel (drinking the kombucha through a straw, following it up with some water, and waiting at least 30 minutes after drinking it before brushing one's teeth) can be practiced by anyone following any style of eating, including WAPF, and still allow one to get the full benefits of the kombucha. For that matter, these are good strategies if one is going to indulge in soda, lemonade, iced tea or other acidic, sugary, or staining drinks.
I personally use a washable and reusable glass drinking straw in order to avoid plastics and unnecessary waste. There are also stainless steel versions available which are less likely to break or chip, but I've found that I can detect a slight metallic taste that I find off-putting.