Fluoride Exposure During Pregnancy and IQ Scores in Offspring

[ArneAnka]

Ny studie om fluorid publicerad i JAMA Pediatrics häromdagen. Slutsatsen av studien är att fluoridintag under graviditeten sänker intelligensen hos barnet. Fluorid tillsätts inte i dricksvattnet i Sverige, men vi har ju fluortandkräm och munskölj. En intressant studie med tanke på att det finns två läger i den här frågan - de som hävdar att fluorid är ofarligt och den andra sidan som hävdar att det är farligt.  

 

https://edition.cnn.com/2019/08/19/health/fluoride-neurotoxin-canada-study/index.html

https://jamanetwork.com/journals/jamapediatrics/fullarticle/2748634

 

Conclusions and Relevance  In this study, maternal exposure to higher levels of fluoride during pregnancy was associated with lower IQ scores in children aged 3 to 4 years. These findings indicate the possible need to reduce fluoride intake during pregnancy.

[Erik 2]

Fluoride crosses the placenta,³ and laboratory studies show that it accumulates in brain regions involved in learning and memory⁴ and alters proteins and neurotransmitters in the central nervous system.⁵ Higher fluoride exposure from drinking water has been associated with lower children’s intelligence in a meta-analysis⁶ of 27 epidemiologic studies and in studies^7,8 including biomarkers of fluoride exposure. However, most prior studies were cross-sectional and conducted in regions with higher water fluoride concentrations than levels considered optimal in North America.⁹ Further, most studies did not measure exposure during fetal brain development. However, it is unclear whether fluoride exposure during pregnancy is associated with cognitive deficits in a population receiving optimally fluoridated water.This study examined whether exposure to fluoride during pregnancy was associated with IQ scores in children in a Canadian birth cohort in which 40% of the sample was supplied with fluoridated municipal water.

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36 minuter sedan, Erik 2 sade:

Fluoride crosses the placenta,³ and laboratory studies show that it accumulates in brain regions involved in learning and memory⁴ and alters proteins and neurotransmitters in the central nervous system.⁵ Higher fluoride exposure from drinking water has been associated with lower children’s intelligence in a meta-analysis⁶ of 27 epidemiologic studies and in studies^7,8 including biomarkers of fluoride exposure. However, most prior studies were cross-sectional and conducted in regions with higher water fluoride concentrations than levels considered optimal in North America.⁹ Further, most studies did not measure exposure during fetal brain development. However, it is unclear whether fluoride exposure during pregnancy is associated with cognitive deficits in a population receiving optimally fluoridated water.This study examined whether exposure to fluoride during pregnancy was associated with IQ scores in children in a Canadian birth cohort in which 40% of the sample was supplied with fluoridated municipal water.

Översatt.

Fluor korsar morkakan, 3 och laboratorieundersökningar visar att det samlas i hjärnregioner involverade i lärande och minne4 och förändrar proteiner och neurotransmittorer i centrala nervsystemet.5 Högre fluoridexponering från dricksvatten har förknippats med lägre barns intelligens i en meta- analys6 av 27 epidemiologiska studier och i studier7,8 inklusive biomarkörer för exponering av fluor. De flesta tidigare studier var dock tvärsnitt och genomfördes i regioner med högre vattenfluoridkoncentrationer än nivåer som ansågs vara optimala i Nordamerika.9 Vidare mätte de flesta studier inte exponering under fostrets hjärnutveckling. Det är emellertid oklart om fluorideksponering under graviditet är förknippad med kognitiva underskott i en population som får optimalt fluoriderat vatten. Denna studie undersökte om exponering för fluor under graviditet var förknippad med IQ-poäng hos barn i en kanadensisk födelsekhort där 40% av prov levererades med fluorerat kommunalt vatten.