The commenter quotes a prospective study examining magnetic-field exposure during pregnancy and childhood…

HHS public comment #6362 · HHS-OASH-2026-0397 · 2026-10-28

#1The commenter quotes a prospective study examining magnetic-field exposure during pregnancy and childhood…by Alex Andreasen » 2026-10-28
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The commenter quotes a prospective study examining magnetic-field exposure during pregnancy and childhood obesity.

  • Research & federal duties: Childhood Obesity" "Abstract We conducted a prospective study to examine whether in-utero exposure to magnetic fields (MFs) in
  • Reproduction & pregnancy: n carried a meter measuring MF levels during pregnancy and 733 of their children were followed up to 13 years to collec
  • Children & vulnerable groups: magnetic fields (MFs) increases the risk of childhood obesity. Participating women carried a meter measuring MF levels during

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Original comment · unedited text

https://pmc.ncbi.nlm.nih.gov/articles/PMC3406339/

"A Prospective Study of In-utero Exposure to Magnetic Fields and the Risk of Childhood Obesity"

"Abstract

We conducted a prospective study to examine whether in-utero exposure to magnetic fields (MFs) increases the risk of childhood obesity. Participating women carried a meter measuring MF levels during pregnancy and 733 of their children were followed up to 13 years to collect clinically recorded information on growth patterns with 33 weight measurements per child on average. Prenatal exposure to high MF level was associated with increased risk of being obese in offspring than those with lower MF level (odds ratio = 1.69, 95% confidence interval: 1.01–2.84). The association demonstrated a dose-response relationship and was stronger (more than 2.3 fold increased risk) among children who were followed up to the end of the study. The association existed only for persistent obesity, but not for transitory (unlikely) obesity. Maternal exposure to high MF during pregnancy may be a new and previously unknown factor contributing to the world-wide epidemic of childhood obesity/overweight."

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