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A comment on Show HN: I invented a caffeinated toothpaste. Parent comment

Re:Show HN: I invented a caffeinated toothpaste by BorgHunter on Thursday September 15, 2016 @01:28PM (#12508042)
If this is true, then I must be really out of touch. No one has expressed that opinion to me, nor have I seen it on Facebook in my News Feed (and I do occasionally see woo-woo stuff there). And I've certainly never heard a dentist say that. I'm not surprised that there are people who make this claim, but I would never have considered it "the popular opinion", or even a popular opinion.
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Re:Show HN: I invented a caffeinated toothpaste by reportingsjr on Thursday September 15, 2016 @01:40PM (#12508151)
The US Dept of Health and Human Services actually halved their recommendation for fluoride in water about six months ago. The reasoning is apparently that people in the US now get enough from other sources such as toothpaste, mouth washes, etc [1].

Note that they didn't /remove/ the recommendation for fluoride in water. They just reduced the recommended amount.

1: http://www.npr.org/sections/health-shots/2015/04/27/40257994...

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Re:Show HN: I invented a caffeinated toothpaste by nappy on Thursday September 15, 2016 @02:31PM (#12508563)
Getting too much fluoride is something that can occur as well: https://en.wikipedia.org/wiki/Dental_fluorosis
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Re:Show HN: I invented a caffeinated toothpaste by reportingsjr on Thursday September 15, 2016 @05:55PM (#12510167)
I am all too aware as I have mild fluorosis in some of my teeth! Although I think the biggest cause of this was semi regular fluoride rinses at the dentist when I was a kid.
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