I agree with your sentiment, but a large factor in tooth decay is bacteria that live in your mouth: http://en.wikipedia.org/wiki/Dental_caries http://en.wikiped

I agree with your sentiment, but a large factor in tooth decay is bacteria that live in your mouth: http://en.wikipedia.org/wiki/Dental_caries http://en.wikipedia.org/wiki/Dental_caries This seems like what the article gets wrong as well. What you drink and eat impacts the environment in your mouth where bacteria flourish which in turn impacts tooth decay. There just isn't such a direct cause/effect relationship between pH/sugar and tooth decay, although they are certainly strongly correlated. As a result, I'd take this article as a loose framework rather than a true scientific ranking.