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Scientists’ statement deflates the bogus idea of ‘safe’ GM

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ENSSER_GMO_statement_10More scientists, physicians and legal experts have signed the group statement issued by the European Network of Scientists for Social and Environmental Responsibility (ENSSER) on the safety of genetically modified organisms (GMOs). The number of initial signatories to the statement, titled ‘No scientific consensus on GMO safety’, was almost 100 on the day it was released, 2013 October 21, and has more than doubled since.

The ENSSER group has reminded us that crop genetic engineering is dominated not by ecological experts but by molecular biologists: “Many are not knowledgeable about ecological risks and – more importantly – they fail to recognise the limitations of their expertise.”

ENSSER_GMO_statement_13Regarding the environmental risk of GM crops, ENSSER has said, the negative effects now documented empirically have been predicted since about 25 years.

For instance, while naturally occurring Bt toxins come in a diversity of variants, GM crops necessarily have to choose one Bt toxin to be transferred, significantly enhancing the probability of resistance development. Such effects are analysed by community ecology researchers and not visible on the genetic level.

“So it is a shame that, more than 20 years after the international academic societies of ecologists and molecular biologists agreed on the complementarity of their competences, and the necessity to assess ecosystem impacts in a systemic fashion, today’s molecular biologists still do neither recognise nor respect the limits of their competencies (not to speak about the influence of funding). Ignoring one’s own blind spots is what can turn science into a social risk.”

ENSSER_GMO_statement_11Those who have signed the statement “strongly reject claims by GM seed developers and some scientists, commentators, and journalists that there is a ‘scientific consensus’ on GMO safety and that the debate on this topic is ‘over’.”

The signatories have said they “feel compelled to issue this statement because the claimed consensus on GMO safety does not exist. The claim that it does exist is misleading and misrepresents the currently available scientific evidence and the broad diversity of opinion among scientists on this issue. Moreover, the claim encourages a climate of complacency that could lead to a lack of regulatory and scientific rigour and appropriate caution, potentially endangering the health of humans, animals, and the environment”.

ENSSER_GMO_statement_16ENSSER members and non-members alike who have signed the statement have collectively said that science and society do not proceed on the basis of a constructed consensus, as current knowledge is always open to well-founded challenge and disagreement. They endorse the need for further independent scientific inquiry and informed public discussion on GM product safety and urge GM proponents to do the same.

Regarding the safety of GM crops and foods for human and animal health, a comprehensive review of animal feeding studies of GM crops found that most studies concluding that GM foods were as safe and nutritious as those obtained by conventional breeding were “performed by biotechnology companies or associates, which are also responsible [for] commercialising these GM plants”.

ENSSER_GMO_statement_12It is often claimed that “trillions of GM meals” have been eaten in the US with no ill effects. However, no epidemiological studies in human populations have been carried out to establish whether there are any health effects associated with GM food consumption. As GM foods are not labelled in North America, a major producer and consumer of GM crops, it is scientifically impossible to trace, let alone study, patterns of consumption and their impacts. Therefore, claims that GM foods are safe for human health based on the experience of North American populations have no scientific basis.

ENSSER_GMO_statement_15A report by the British Medical Association concluded that with regard to the long-term effects of GM foods on human health and the environment, “many unanswered questions remain” and that “safety concerns cannot, as yet, be dismissed completely on the basis of information currently available”. The report called for more research, especially on potential impacts on human health and the environment.

ENSSER_GMO_statement_14Likewise, a statement by the American Medical Association’s Council on Science and Public Health acknowledged “a small potential for adverse events … due mainly to horizontal gene transfer, allergenicity, and toxicity” and recommended that the current voluntary notification procedure practised in the US prior to market release of GM crops be made mandatory. The ENSSER group has said that even a “small potential for adverse events” may turn out to be significant, given the widespread exposure of human and animal populations to GM crops.

One Response

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  1. There is broad scientific consensus that food on the market derived from GM crops poses no greater risk to human health than conventional food.

    Jerry N. Robinson

    November 17, 2013 at 18:56


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