correlational
Analysis v1
Strong Support
When little kids between 1 and 5 years old have less iron in their blood, they tend to do worse on tests that measure how well they talk, move, and interact with others.
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Evidence from Studies
Supporting (1)
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Community contributions welcome
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This study found that toddlers and preschoolers with lower iron levels in their blood scored worse on tests of talking, moving, and playing with others—and when they got iron treatment, their scores got better. So low iron is linked to slower development.
Contradicting (0)
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Community contributions welcome
No contradicting evidence found
Gold Standard Evidence Needed
According to GRADE and EBM methodology, here is what ideal scientific evidence would look like to definitively prove or disprove this specific claim, ordered from strongest to weakest evidence.