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Do kids consume tap-water equally? I don't know how to check this. I'd imagine one family that cooks a lot of meals where you're just cooking in tap-water (sp

by kaibee 2y ago

Do kids consume tap-water equally? I don't know how to check this. I'd imagine one family that cooks a lot of meals where you're just cooking in tap-water (spaghetti, etc), could end up having a lot more fluoride than a family that eats more like, rice, which absorbs a lot more water? Also dishes that involve longer cooking times where you end up reducing the tap-water more? At a population level, you might end up with increased variance in the same bounds?

LocalPCGuy 2y ago
In general, studies I've looked at show that even with unequal consumption, even those in the "high consumption" (and therefore probably higher fluoride ingestion) don't lead to what would be considered an excessive amount over the recommended exposure limits. Not saying it couldn't happen of course, there are outliers. Overall exposure should be considered for children. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2697936/ https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2697936/ > The probability of exceeding the UL of 7 mg fluoride per day via a normal diet was estimated to be very low in the Belgian adult population. Note: it's hard to find studies like this that focus on kids and not adults, but except for the difficulty in getting accurate responses from kids, that shouldn't lead to a difference. However given that the upper level is lower in children, it's a much tighter window that could then be exceeded by other sources of fluoride like swallowed toothpaste or food supplements with fluoride. So caution is probably warranted. An Irish study found no risk of excess consumption by adults or children (excepting "misuse of toothpaste"): - https://www.irishtimes.com/news/health/fluoride-in-food-drinks-and-tap-water-poses-no-risk-to-health-1.3479000 https://www.irishtimes.com/news/health/fluoride-in-food-drin... - https://www.fsai.ie/publications/total-diet-study-2014-2016-assessment-of-dietary-e https://www.fsai.ie/publications/total-diet-study-2014-2016-...

by kaibee 2y ago

LocalPCGuy 2y ago

In general, studies I've looked at show that even with unequal consumption, even those in the "high consumption" (and therefore probably higher fluoride ingestion) don't lead to what would be considered an excessive amount over the recommended exposure limits. Not saying it couldn't happen of course, there are outliers. Overall exposure should be considered for children. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2697936/ https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2697936/ > The probability of exceeding the UL of 7 mg fluoride per day via a normal diet was estimated to be very low in the Belgian adult population. Note: it's hard to find studies like this that focus on kids and not adults, but except for the difficulty in getting accurate responses from kids, that shouldn't lead to a difference. However given that the upper level is lower in children, it's a much tighter window that could then be exceeded by other sources of fluoride like swallowed toothpaste or food supplements with fluoride. So caution is probably warranted. An Irish study found no risk of excess consumption by adults or children (excepting "misuse of toothpaste"): - https://www.irishtimes.com/news/health/fluoride-in-food-drinks-and-tap-water-poses-no-risk-to-health-1.3479000 https://www.irishtimes.com/news/health/fluoride-in-food-drin... - https://www.fsai.ie/publications/total-diet-study-2014-2016-assessment-of-dietary-e https://www.fsai.ie/publications/total-diet-study-2014-2016-...