Strong Opposition
descriptive
In early pregnancy, total thyroid hormone levels (TT4) are similar regardless of iron status, because pregnancy naturally increases proteins that bind thyroid hormone, making TT4 an unreliable...
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Evidence from Studies
Supporting (0)
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No supporting evidence found
Contradicting (1)
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The Relationship between Iron Deficiency and Thyroid Function in Chinese Women during Early Pregnancy.
Cross-Sectional Study
Human
2016Gold 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.