The thesis of a Swedish doctoral candidate in economics is not the equivalent of the disciplined longitudinal analysis of a team of top scientists from world class universities who specialize in the neurotoxic impact of environmental exposure to toxins during pregnancy.

“We tested for all the things we could think of that could act on neurodevelopment. But we haven’t found anything else that was a potential confounder... Our study shows that the growing fetal nervous system may be adversely affected by higher levels of fluoride exposure.” - Dr. Howard Hu, Dean of the Dalla Lana School of Public Health at the University of Toronto & lead investigator (2017)

STUDY CONCLUSION: “In this study, higher levels of maternal urinary fluoride during pregnancy (a proxy for prenatal fluoride exposure) that are in the range of levels of exposure in other general population samples of pregnant women as well as nonpregnant adults were associated with lower scores on tests of cognitive function in the offspring at 4 and 6–12 y old.” - Bashash et al. 2017

But the impact on brains is not just about subtle impacts on IQ
STUDY CONCLUSION: “The findings suggest that fluoridated water may be an environmental risk factor for ADHD.” - Malin & Till 2015

FROM EPA SCIENTISTS: Fluoride has “substantial evidence of developmental neurotoxicity” while formaldehyde and DDT only have “minimal evidence of developmental neurotoxicity.” - Mundy et al. 2009