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the claim
Eating clay has beneficial health effects
the verdict
REFUTED
the evidence says no
Recorded sources
2 sources for · 3 against
Is it true that eating clay has beneficial health effects?
No. While clay consumption is culturally practiced for perceived therapeutic benefits such as alleviating pregnancy-related nausea, scientific reviews highlight substantial health risks, including heavy metal toxicity, pathogen exposure, and strong associations with iron deficiency anemia. Consequently, the claim that eating clay has beneficial health effects remains heavily contested and carries demonstrated risks.
Verdict: REFUTED · 2 sources for, 3 against · Last checked
The analysis
Judged against the evidence record for claims of this kind.
Evidence for · 2
Geophagia is often practiced due to perceived antinausea or therapeutic effects during pregnancy.
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Bonglaisin, J. N., Kunsoan, N. B., Bonny, P., Matchawe, C., Tata, B. N., Nkeunen, G., & Mbofung, C. M. (2022). Geophagia: Benefits and potential toxicity to human—A review. peer-reviewed literature. https://doi.org/10.3389/fpubh.2022.893831
Evidence against · 3
The safety of geophagia is not fully established and the practice carries potential toxicity risks due to heavy metals, pesticides, and other harmful elements.
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Bonglaisin, J. N., Kunsoan, N. B., Bonny, P., Matchawe, C., Tata, B. N., Nkeunen, G., & Mbofung, C. M. (2022). Geophagia: Benefits and potential toxicity to human—A review. peer-reviewed literature. https://doi.org/10.3389/fpubh.2022.893831
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More for · 1
The consumption of calabash chalk is noted for its potential probiotic effects and provision of certain minerals, alongside its use to alleviate pregnancy symptoms.
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AN, M., O, M., & RA, A. (2025). Geophagia among pregnant women: evaluating the microbiological and toxicological safety of calabash chalk and its implications on maternal health.. peer-reviewed literature. https://doi.org/10.1007/s10653-025-02656-w
More against · 2
Pregnant women engaging in geophagia present with significantly lower ferritin and hemoglobin levels, indicating that the practice is associated with iron deficiency and anemia rather than beneficial nutritional status.
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EE, E., DTR, M., LE, L., SL, M., JPA, L., IC, B., I, T., C, S., M, G., DL, C., RJF, L., & L, H. (2025). Geophagia in pregnancy and its association with nutritional status - A prospective cohort study in rural north-eastern Tanzania.. peer-reviewed literature. https://doi.org/10.1186/s12966-025-01721-y
Calabash chalk consumption presents microbiological and chemical safety hazards, including exposure to pathogenic microorganisms, heavy metals, and pesticide residues.
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AN, M., O, M., & RA, A. (2025). Geophagia among pregnant women: evaluating the microbiological and toxicological safety of calabash chalk and its implications on maternal health.. peer-reviewed literature. https://doi.org/10.1007/s10653-025-02656-w
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What does the evidence say?
Judged against the evidence record for claims of this kind.
Receipt History
first checked05 Aug 2026
judged → REFUTED · 1905 Aug 2026
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