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Dental Fillings Linked to Pregnancy Risk

Analysis by Dr. Joseph Mercola Fact Checked

dental fillings during pregnancy

Story at-a-glance -

  • Mercury fillings are linked to perinatal death; pregnant women with 16 mercury fillings had nearly double the risk of perinatal death compared to those with zero amalgam fillings
  • A dose-dependent relationship was noted, with risk of perinatal death increasing along with the number of amalgams
  • Pregnant dental staff, who are exposed to mercury vapors in the workplace, have higher levels of mercury in their urine as well as lower blood antioxidant activity during the three trimesters of pregnancy
  • Pregnant dental staff were more likely to experience miscarriage and preeclampsia, and their babies tended to be smaller for gestational age, compared to babies born to nonmercury-exposed women
  • The negative pregnancy outcomes among the dental staff may be linked to oxidative stress induced by exposure to mercury

Mercury is a toxic heavy metal, one that can cause harmful effects to your nervous, digestive, respiratory and immune systems. It's known to damage both the kidneys and the lungs in humans, and the World Health Organization (WHO) notes that health effects from mercury exposure include tremors, impaired vision and hearing, emotional instability, paralysis, insomnia and developmental deficits during fetal development.

Mercury exposure has also been linked to attention deficit and developmental delays during childhood, with WHO noting, "[M]ercury may have no threshold below which some adverse effects do not occur." In other words, even very small doses of mercury may be harmful.

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