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Fluoride Exposure During Pregnancy and IQ Scores in Offspring

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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.

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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 studies7,8 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 studies7,8 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.

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 Här bemöter kemi professorns Paul  Conett kritikerna av studien:  

 

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