Evidence map›Paper›PMID 41878058›Full record

ArticleEnvironmental science & technology letters2023

Glyphosate and fluoride in high-hardness drinking water are positively associated with chronic kidney disease of unknown etiology (CKDu) in Sri Lanka.

Jake C Ulrich, Kate Hoffman, T D K S C Gunasekara, P M M A Sandamini, Brian P Jackson, P Mangala C S De Silva, Nishad Jayasundara, P Lee Ferguson

Abstract read
In one paragraph

Article in Environmental science & technology letters, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.

0numbers the graph read from it
0cells of the map it votes in
8citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

8 citing papers in PubMed.

  1. Chronic exposure to low levels of glyphosate and metals induces kidney dysfunction.Toxicological sciences : an official journal of the Society of Toxicology · 2026
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

8 authors.

Jake C UlrichDepartment of Civil and Environmental Engineering, Duke University, Durham, NC, 27708, USA.ORCID 0000-0002-7511-2600
Kate HoffmanNicholas School of the Environment, Duke University, Durham, NC, 27708, USA.
T D K S C GunasekaraDepartment of Zoology, University of Ruhuna, Matara, 81000, Sri Lanka.ORCID 0000-0002-3095-6164
P M M A SandaminiDepartment of Zoology, University of Ruhuna, Matara, 81000, Sri Lanka.
Brian P JacksonDartmouth Trace Element Analysis Core, Dartmouth College, Hanover, NH, 03755, USA.
P Mangala C S De SilvaDepartment of Zoology, University of Ruhuna, Matara, 81000, Sri Lanka.ORCID 0000-0002-1927-6512
Nishad JayasundaraNicholas School of the Environment, Duke University, Durham, NC, 27708, USA.ORCID 0000-0003-2485-6893
P Lee FergusonDepartment of Civil and Environmental Engineering, Duke University, Durham, NC, 27708, USA.ORCID 0000-0002-8367-7521

Funding

Research CoreU2CES030851 · NIEHS · DUKE UNIVERSITY · PI FERGUSON, P. LEE, STAPLETON, HEATHER M · 2019 to 2025
$6.0M
NIEHS NIH HHS U2C ES030851
6 · The paper itself

Abstract

Chronic Kidney Disease of uncertain Etiology (CKDu) has emerged as a serious public health concern in farming communities globally, especially in Sri Lanka with 5-20% of the adult population affected by the disease in CKDu-endemic regions. It is hypothesized that drinking water contamination of glyphosate in combination with water hardness and co-occurring trace elements contribute to CKDu in Sri Lanka. However, no studies to-date have comprehensively examined this hypothesis. Here we conducted a large field study to measure and compare drinking water chemical burden in CKDu-endemic areas with CKDu-non-endemic areas in rural Sri Lanka. Chemical measures of water quality included glyphosate, water hardness, and trace elements including fluoride. Glyphosate was detected in 44% of endemic wells and 8% of non-endemic wells. Fluoride was detected in 99% of endemic wells and 80% of non-endemic wells. Logistic regression revealed that the presence of elevated glyphosate, fluoride, hardness, and vanadium in wells were positively associated with CKDu prevalence. The co-occurrence of glyphosate and high hardness indicate potential complexation of glyphosate in wells from CKDu-endemic areas. Collectively, our work represents the first definitive assessment of glyphosate presence in regions with geogenic high water hardness and fluoride and demonstrate a strong correlation with CKDu incidence.

Indexed as

Analytical ChemistryChronic Kidney DiseaseGlyphosateHuman Exposure

Identifiers

PMID41878058
PMCPMC13008361

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.