give me a moment and I will find the study. I wrote the article about 4 years ago. ha my bad.
well water sometimes has naturally occurring fluoride in at as well. There are plenty of nations around the world who do not have fluoride in the water and do fine. Also, the idea is that fluoride only works when applied topically. so how does drinking it via water help? It has effects beyond the teeth, as many studies have pointed out.