The Claim
In school-age children aged 7–12 years, a one-standard-deviation increase in urinary fluoride concentration is associated with a 0.22 cm³ increase in thyroid volume, indicating a potential link between fluoride exposure and thyroid enlargement in this population.
What the research says
Supports is higher
Support is ahead, but a single strong opposing study can change this.
These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.
In kids aged 7 to 12, the more fluoride they have in their urine, the bigger their thyroid gland tends to be — by a tiny amount, about the size of a small grape.
See the scientific wording
In school-age children aged 7–12 years, each standard deviation increase in urinary fluoride is associated with a 0.22 cm³ increase in thyroid volume, suggesting a link between fluoride exposure and thyroid enlargement in this population.
What the research says
1 studyThis study found that kids with more fluoride in their urine tended to have bigger thyroids, just like the claim said — and it even gave the exact same number: 0.22 cm³ bigger per fluoride increase.
Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting studies
Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.