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the claim

Caesarean births are impacting human evolution

the verdict
SUPPORTED
the evidence backs this
Recorded sources
2 sources for · 0 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 caesarean births are impacting human evolution?

Yes. Cesarean births act as a medical intervention that buffers natural selection against obstructed labor, thereby allowing genetic traits associated with fetopelvic disproportion to be passed down and actively influencing human evolutionary trajectories.

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

The analysis

The claim is specific, empirical, and testable regarding whether medical intervention in childbirth alters human evolution. Papers [0] and [3] explicitly discuss how the regular use of cesarean delivery bypasses the fatal outcomes of cephalopelvic disproportion, thereby altering selection pressures and driving ongoing evolutionary changes in human reproductive anatomy. The remaining papers focus on related topics such as the obstetrical dilemma, maternal mortality, and pelvic measurements without directly evaluating the evolutionary impact of C-sections. Therefore, the evidence firmly supports the claim.

Evidence for · 2
Evolution of the human pelvis and obstructed labor: New explanations of an old obstetrical dilemma
2019
States that the regular application of life-saving cesarean sections has evolutionary increased rates of cephalopelvic disproportion.
Get citation
Pavličev, M., Romero, R., & Mitteroecker, P. (2019). Evolution of the human pelvis and obstructed labor: New explanations of an old obstetrical dilemma. doi.org. https://doi.org/10.1016/j.ajog.2019.06.043

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More for · 1
Evolution of the human birth canal.
2024
Indicates that cesarean deliveries have disrupted the evolutionary equilibrium and led to new and ongoing evolutionary changes by buffering selection.
Get citation
P, M. & B, F. (2024). Evolution of the human birth canal.. doi.org. https://doi.org/10.1016/j.ajog.2022.09.010

Receipt History
first checked05 Aug 2026
judged → SUPPORTED · 7605 Aug 2026
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