Re:Show HN: I invented a caffeinated toothpaste
by ptaipale on Friday September 16, 2016 @03:28AM
(#12512463)
Yes, and it always has had - one would expect that during the human evolution, the human body developed to expect and utilize variable levels of fluoride in drinking water.
Nowadays we consume processed water which is clear of many impurities and tends to come just one source. The quality is extremely consistent, so we don't die of poisonings and contaminations. But then, the selection of where our drinking water comes from, and the purification processes may have the impact that the fluoride level is consistently lower than is good. Hence the possible need to add fluoride to water.
Nowadays we consume processed water which is clear of many impurities and tends to come just one source. The quality is extremely consistent, so we don't die of poisonings and contaminations. But then, the selection of where our drinking water comes from, and the purification processes may have the impact that the fluoride level is consistently lower than is good. Hence the possible need to add fluoride to water.