“Safe” levels of GM Maize and Roundup can cause tumours, multiple organ damage and premature death in laboratory rats, finds first peer-reviewed lifetime feeding trial

#GMfeedtrial

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The Evidence

This study is the first long-term animal feeding trial to look at the lifetime effects of consuming Roundup tolerant GM Maize (NK603), and the world’s best-selling herbicide, Roundup.
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The trial lasted for two years (the lifespan of a rat) and found that consumption of both products at levels currently considered ‘safe’ can cause severe negative health effects, including mammary tumours, kidney and liver damage, and premature death.
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The first tumour was observed after four months, but most tumours were only detected after 18 months. Currently GM crops are licensed after testing on animals for just 90 days.
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Researchers found that GM maize and Roundup both caused similar damage to the rats’ health whether they were consumed on their own or together. Females developed fatal mammary tumours and pituitary disorders. Males suffered liver damage, developed kidney and skin tumours and experienced problems with their digestive systems
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The team identified a ‘threshold effect’ where even the lowest doses were associated with severe health problems. The lowest doses of Roundup tested were at levels currently permitted in drinking water in the UK and US
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Up to 50% of males and 70% of females died prematurely (before deaths could be attributed to normal aging) compared to only 20-30% respectively in the control group.
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Across all treatments and both sexes, researchers found that treated rats developed 2-3 times more large tumours than the control group.
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By the beginning of the 24th month of the trial 50-80% of all female rats in the treated groups had developed large tumours, with up to three per animal.
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Among the females large tumours were five times more frequent than among males; 93% were mammary tumours
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On the basis of these findings we support a call for further research, long-term animal feeding trials studying the health impacts of all licensed GM products and glyphosate-based pesticides, and urge a precautionary review of the regulatory framework.
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“Safe” levels of GM Maize and Roundup can cause tumours, multiple organ damage and premature death in laboratory rats, finds first peer-reviewed lifetime feeding trial

#GMfeedtrial

Play video

Share the video

The Evidence

This study is the first long-term animal feeding trial to look at the lifetime effects of consuming Roundup tolerant GM Maize (NK603), and the world’s best-selling herbicide, Roundup.

The trial lasted for two years (the lifespan of a rat) and found that consumption of both products at levels currently considered ‘safe’ can cause severe negative health effects, including mammary tumours, kidney and liver damage, and premature death.

The first tumour was observed after four months, but most tumours were only detected after 18 months. Currently GM crops are licensed after testing on animals for just 90 days.

The team identified a ‘threshold effect’ where even the lowest doses were associated with severe health problems. The lowest doses of Roundup tested were at levels currently permitted in drinking water in the UK and US

Up to 50% of males and 70% of females died prematurely (before deaths could be attributed to normal aging) compared to only 20-30% respectively in the control group.

Across all treatments and both sexes, researchers found that treated rats developed 2-3 times more large tumours than the control group.

By the beginning of the 24th month of the trial 50-80% of all female rats in the treated groups had developed large tumours, with up to three per animal.

Among the females large tumours were five times more frequent than among males; 93% were mammary tumours

On the basis of these findings we support a call for further research, long-term animal feeding trials studying the health impacts of all licensed GM products and glyphosate-based pesticides, and urge a precautionary review of the regulatory framework.

Spread the word

Stay updated

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