Fluoride in the urine of pregnant women shows a correlation with lower measures of intelligence in their children, the growing fetal nervous system may be adversely affected by higher levels of fluoride exposure, the prenatal nervous system may be more sensitive to fluoride compared to that of toddler.
Some side effects of fluoride are dental defects like mild staining are common among those ingesting recommended levels of fluoride and skeletal fluorosis-excessive accumulation of fluoride in the bones.
The researchers analyzed urine samples that had been taken from mothers during pregnancy and from their children between six and twelve years of age to reconstruct personal measures of fluoride exposure for both mother and child.
The researchers then analyzed how levels of fluoride in urine related to the children's verbal, perceptual-performance, quantitative, memory, and motor abilities at age four, six and twelve. They discovered that urinary fluoride levels in pregnant women were higher but within the general range of urinary fluoride levels seen in non-pregnant.
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