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the claim

Morning sickness in pregnancy is caused by rising levels of the hormone hCG.

the verdict
REFUTED
the evidence says no
Recorded sources
0 sources for · 2 against

Counts group repeated records of the same source within each side. They do not measure evidence strength or source independence.

Is it true that morning sickness in pregnancy is caused by rising levels of the hormone hCG?

No. A reference source states the cause of morning sickness is unknown and only 'may relate' to hCG, and a 2025 peer-reviewed review identifies the placental hormone GDF15, not hCG, as the principal causal factor.

Verdict: REFUTED · 0 sources for, 2 against · Last checked

The private library was unavailable for some searches in this check. Missing library results are not evidence against the claim.

Evidence against · 2
Morning sickness
Get citation
Morning sickness. (n.d.). en.wikipedia.org. https://en.wikipedia.org/wiki/Morning_sickness

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More against · 1
Proximate and ultimate causes of pregnancy sickness.
2025
Get citation
DJ, S. (2025). Proximate and ultimate causes of pregnancy sickness.. doi.org. https://doi.org/10.1093/emph/eoaf025

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