Evidence map›Paper›PMID 40993561›Full record

SynthesisBMC public health2025

Paraquat at 63-the story of a controversial herbicide and its regulations: It is time to put people and public health first when regulating paraquat.

Leah Utyasheva, Prabath Amarasinghe, Michael Eddleston

Abstract readSystematic Review
In one paragraph

Synthesis in BMC public health, 2025. 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.

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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

3 authors.

Leah UtyashevaCentre for Pesticide Suicide Prevention, University of Edinburgh, Edinburgh, UK. lutyashe@ed.ac.uk.
Prabath AmarasingheCentre for Pesticide Suicide Prevention, University of Edinburgh, Edinburgh, UK.
Michael EddlestonCentre for Pesticide Suicide Prevention, University of Edinburgh, Edinburgh, UK.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundParaquat is one of the most widely used herbicides in the world, despite its high human toxicity and the overwhelming evidence of associated high morbidity and mortality. Due to the significant public health implications of the use of paraquat, there have been calls to severely restrict or ban it in many countries. In this paper, we aim to investigate the regulatory status of paraquat at the national, regional, and international levels, discuss the successes and challenges of regulatory implementation, and review the impact of regulation on the incidence of poisoning and death.

methodsWe conducted a systematic review of articles on the regulation of the herbicide paraquat. The review concentrated on interventions to mitigate the negative public health impact of paraquat use. To complement our findings, we also conducted region-wise and country-wise searches on paraquat regulations. We collected information on paraquat regulations and restrictions and regulatory aspects of regulation implementation.

resultsAt least 74 countries do not authorise paraquat in their markets, with bans, phase-outs, and withdrawals from the market. National and regional bans and phase-outs were effective at reducing paraquat poisoning and deaths. Restrictions on the use and application of paraquat, however, did not always result in a significant reduction in poisoning or suicide mortality, and many countries introduced bans after restrictions proved ineffective.

conclusionOur review highlights several important elements for the success of the implementation of these regulations, with reductions in harm and no effect on agriculture. It is now time for national, regional, and international authorities to pay attention to the scientific evidence of human toxicity and put people's lives and health ahead of economic and business considerations in regulating paraquat. Its use should be replaced by other of weed control. This should be a public health priority.

Indexed as

Government RegulationHerbicidesParaquatPublic HealthHumansHerbicidesParaquatParaquat banParaquat mortalityParaquat poisoningParaquat regulationRestrictions on use

Identifiers

PMID40993561
PMCPMC12462389

What OpenQuestion holds

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LicenceCC BY
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Registered trials

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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.