trustmebro.to/r/…
✓ checked
trust me, bro:
here is the receipt.
the claim

DDT causes thinning of bird eggshells.

the verdict
INSUFFICIENT LEANING
Recorded sources
10 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 DDT causes thinning of bird eggshells?

Unclear. Multiple sources, including peer-reviewed studies and an EPA page, state that DDT and its metabolite DDE cause eggshell thinning in birds, though most describe specific species or give brief general mentions rather than a comprehensive demonstration.

Verdict: PARTIAL LEAN · 10 sources for, 0 against · Last checked

Evidence for · 10
Embryonic exposure to o,p ′-DDT causes eggshell thinning and altered shell gland carbonic anhydrase expression in the domestic hen
Get citation
Embryonic exposure to o,p ′-DDT causes eggshell thinning and altered shell gland carbonic anhydrase expression in the domestic hen. (n.d.). cir.nii.ac.jp. https://doi.org/10.1897/05-619r.1

See more details
More for · 9
Environmental exposure to non-steroidal anti-inflammatory drugs and potential contribution to eggshell thinning in birds.
2023
Get citation
Solla, S. R. d., King, L. E., & Gilroy, È. A. M. (2023). Environmental exposure to non-steroidal anti-inflammatory drugs and potential contribution to eggshell thinning in birds.. doi.org. https://doi.org/10.1016/j.envint.2022.107638

Avian eggshell thinning caused by transovarian exposure to o,p'-DDT : changes in histology and calcium-binding protein production in the oviduct uterus
Get citation
Avian eggshell thinning caused by transovarian exposure to o,p'-DDT : changes in histology and calcium-binding protein production in the oviduct uterus. (n.d.). cir.nii.ac.jp. https://doi.org/10.2131/jts.45.131

Encyclopedia Of Agriculture And Food Systems
Get citation
Encyclopedia Of Agriculture And Food Systems. (n.d.). archive.org. https://archive.org/details/Encyclopedia_Of_Agriculture_And_Food_Systems

A review of factors affecting productivity of bald eagles in the Great Lakes region: implications for recovery.
1995
Get citation
WW, B., JP, G., DA, B., & VJ, K. (1995). A review of factors affecting productivity of bald eagles in the Great Lakes region: implications for recovery.. doi.org. https://doi.org/10.1289/ehp.95103s451

PubMed: Calcium-45 uptake by shell gland, oviduct, plasma and eggshell of DDT-dosed ducks and chickens.
Get citation
PubMed: Calcium-45 uptake by shell gland, oviduct, plasma and eggshell of DDT-dosed ducks and chickens.. (n.d.). pubmed.ncbi.nlm.nih.gov. https://pubmed.ncbi.nlm.nih.gov/727831/

EncyclopediaOfBiodiversityVol.2
Get citation
EncyclopediaOfBiodiversityVol.2. (n.d.). archive.org. https://archive.org/details/EncyclopediaOfBiodiversityVol.2

The Case of DDT: Revisiting the Impairment | US EPALockPrimary navigationOpen Sidenav MenuClose Sidenav Menuexpand or collapse the child menuexpand or collapse the child menuexpand or collapse the child menuexpand or collapse the child menuexpand or collapse the child menuexpand or collapse the chil
Get citation
The Case of DDT: Revisiting the Impairment | US EPALockPrimary navigationOpen Sidenav MenuClose Sidenav Menuexpand or collapse the child menuexpand or collapse the child menuexpand or collapse the child menuexpand or collapse the child menuexpand or collapse the child menuexpand or collapse the chil. (n.d.). epa.gov. https://www.epa.gov/caddis/case-ddt-revisiting-impairment

A METABOLIC DERIVATION OF DDE FROM KELTHANE®
1986
Get citation
A METABOLIC DERIVATION OF DDE FROM KELTHANE®. (1986). doi.org. https://doi.org/10.1897/1552-8618(1986)5[13:amdodf]2.0.co;2

childrensillustratedencyclopediabydk
Get citation
childrensillustratedencyclopediabydk. (n.d.). archive.org. https://archive.org/details/childrensillustratedencyclopediabydk

Receipt History
held for human review17 Oct 2026
Anyone with this link can read the claim and its public receipt, including any personal information in that text. Open permanent receipt.
Check your own claim
Challenge the receipt
Requests are recorded for review. This does not start an automatic check or guarantee a response time.

Citation formatting by citeproc-js (Frank Bennett) and the Citation Style Language project. Source and licenses.

This receipt is an automated verdict against our published method · not an opinion about any author or publication.
Terms · Privacy · How verdicts work