Wednesday, February 4, 2026

Prenatal exposure to fluoride associated with neurobehavioral problems in children

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A recent study published in JAMA Network Open suggests that prenatal exposure to fluoride, commonly found in drinking water, may pose risks to children’s neurobehavioral development. Fluoride is added to U.S. water systems to prevent tooth decay, but research indicates that higher levels of exposure during pregnancy could lead to neurobehavioral issues in children.

The study analyzed 229 mother-child pairs from Los Angeles, focusing on Hispanic women of low socioeconomic status. Urine samples were collected from the mothers during pregnancy, and children’s neurobehavioral outcomes were assessed at age three using the Preschool Child Behavior Checklist.

The findings revealed that higher maternal urinary fluoride levels were associated with an increased likelihood of children exhibiting neurobehavioral problems, especially internalizing symptoms like anxiety and emotional reactivity. These results align with similar studies in Mexico and Canada, emphasizing the need for further research on the potential risks of fluoride exposure during pregnancy.

Lead researcher Ashley Malin highlighted the importance of these findings and called for more comprehensive studies to address this concerning issue. The study, titled “Maternal Urinary Fluoride and Child Neurobehavior at Age 36 Months,” underscores the need for greater awareness of fluoride intake during pregnancy to safeguard children’s neurodevelopment.


Vocabulary List:

  1. Prenatal /priˈneɪ.təl/ (adjective): Relating to the period before birth.
  2. Neurobehavioral /ˌnjʊə.roʊ.bɪˈheɪ.vjər.əl/ (adjective): Relating to the interaction between neurological and behavioral processes.
  3. Socioeconomic /ˌsoʊ.si.oʊˈiː.kə.nɑː.mɪk/ (adjective): Relating to or concerned with the interaction of social and economic factors.
  4. Exhibit /ɪɡˈzɪb.ɪt/ (verb): To show or demonstrate something.
  5. Emotional /ɪˈmoʊ.ʃən.əl/ (adjective): Relating to a person’s feelings or emotions.
  6. Safeguard /ˈseɪf.ɡɑrd/ (verb): To protect something or someone from harm or damage.

How much do you know?

What does the recent study published in JAMA Network Open suggest about prenatal exposure to fluoride?
a) It has no impact on children's neurobehavioral development
b) It may pose risks to children's neurobehavioral development
c) It improves children's neurobehavioral development
d) It helps prevent tooth decay in children
How many mother-child pairs were analyzed in the study from Los Angeles?
a) 150
b) 200
c) 229
d) 300
Which group of women was the study primarily focused on?
a) Caucasian women
b) Asian women
c) Hispanic women of low socioeconomic status
d) African American women
What age were the children assessed at in the study?
a) 1 year
b) 2 years
c) 3 years
d) 4 years
Which symptoms were more likely to be exhibited by children with higher maternal urinary fluoride levels?
a) Physical symptoms
b) Cognitive symptoms
c) Externalizing symptoms
d) Internalizing symptoms like anxiety and emotional reactivity
What did lead researcher Ashley Malin call for in response to the study findings?
a) Halting fluoride exposure in water systems
b) Ignoring the results of the study
c) More comprehensive studies on the issue
d) Promoting higher fluoride intake in pregnant women
This question is required

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