Skip to main content
Log in

Plurality of opinion, scientific discourse and pseudoscience: an in depth analysis of the Séralini et al. study claiming that Roundup™ Ready corn or the herbicide Roundup™ cause cancer in rats

  • Perspective
  • Published:
Transgenic Research Aims and scope Submit manuscript

Abstract

A recent paper published in the journal Food and Chemical Toxicology presents the results of a long-term toxicity study related to a widely-used commercial herbicide (Roundup™) and a Roundup-tolerant genetically modified variety of maize, concluding that both the herbicide and the maize varieties are toxic. Here we discuss the many errors and inaccuracies in the published article resulting in highly misleading conclusions, whose publication in the scientific literature and in the wider media has caused damage to the credibility of science and researchers in the field. We and many others have criticized the study, and in particular the manner in which the experiments were planned, implemented, analyzed, interpreted and communicated. The study appeared to sweep aside all known benchmarks of scientific good practice and, more importantly, to ignore the minimal standards of scientific and ethical conduct in particular concerning the humane treatment of experimental animals.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Similar content being viewed by others

References

  • Arjó G, Capell T, Matias-Guiu X, Zhu C, Christou P, Piñol C (2012) Mice fed on a diet enriched with genetically engineered multivitamin corn show no sub-acute toxic effects and no sub-chronic toxicity. Plant Biotechnol J 10:1026–1034

    Article  PubMed  Google Scholar 

  • Bernhardt AG (2012) Peru verbietet genmanipulierte Pflanzen. JungeWelt, 22 Nov 2012 (http://www.jungewelt.de/2012/11-22/032.php)

  • Butler D (2012) Hyped GM maize study faces growing scrutiny (http://www.nature.com/news/hyped-gm-maize-study-faces-growing-scrutiny-1.11566)

  • Chassy BM (2010) Can—omics inform a food safety assessment. Regul Toxicol Pharmacol 58:S62–S70

    Article  PubMed  Google Scholar 

  • Davis RK, Stevenson GT, Busch KA (1956) Tumor incidence in normal Sprague-Dawley female rats. Cancer Res 16:194–197

    PubMed  CAS  Google Scholar 

  • Elias PS (1980) The wholesomeness of irradiated food. Ecotoxicol Environ Saf 4:172–183

    Article  PubMed  CAS  Google Scholar 

  • Entine J (2012) Anti-GM corn study reconsidered: Séralini finally responds to torrent of criticism (http://www.geneticliteracyproject.org/2012/11/19/anti-gm-corn-study-reconsidered-seralini-finally-responds-to-torrent-of-criticism/)

  • Eriksson L, Johansson E, Kettaneh-Wold N, Trygg J, Wikström C, Wold S (2006a) Multi- and megavariate data analysis part II advanced applications and method extensions. Umetrics Academy, Umea

    Google Scholar 

  • Eriksson L, Johansson E, Kettaneh-Wold N, Wold S (2006b) Multi and megavariate data analysis part I—principles and applications. Umetrics Academy, Umea

    Google Scholar 

  • European Union (2010) Directive 2010/63/EU of the European Parliament and of the council of 22 Sept 2010

  • European Food Safety Authority (2012) Review of the Séralini et al. (2012) publication on a 2-year rodent feeding study with glyphosate formulations and GM maize NK603 as published online on 19 September 2012 in Food and Chemical Toxicology. EFSA J 10:2910–2919

    Google Scholar 

  • Fanelli D (2009) How many scientists fabricate and falsify research? A systematic review and meta-analysis of survey data. PLoS One 4:e5738

    Article  PubMed  Google Scholar 

  • Farre G, Ramessar K, Twyman RM, Capell T, Christou P (2010) The humanitarian impact of plant biotechnology: recent breakthroughs vs bottlenecks for adoption. Curr Opin Plant Biol 13:219–225

    Article  PubMed  Google Scholar 

  • Farre G, Twyman RM, Zhu C, Capell T, Christou P (2011) Nutritionally enhanced crops and food security: scientific achievements versus political expediency. Curr Opin Biotechnol 22:245–251

    Article  PubMed  CAS  Google Scholar 

  • He XY, Tang MZ, Luo YB, Li X, Cao SS, Yu JJ, Delaney B, Huang KL (2009) A 90-day toxicology study of transgenic lysine-rich maize grain (Y642) in Sprague-Dawley rats. Food Chem Toxicol 47:425–432

    Article  PubMed  CAS  Google Scholar 

  • Institut Borja de Bioètica (2012) Francesc Abel i la Biotètica, un llegat per a la vida, 1st edn. Editorial Proteus

  • Kano H, Suzuki M, Senoh H, Yamazaki K, Aiso S, Matsumoto M, Nagano K, Fukushima S (2012) 2,4-Dichloro-1-nitrobenzene exerts carcinogenicities in both rats and mice by two years feeding. Arch Toxicol 86:1763–1772

    Article  PubMed  CAS  Google Scholar 

  • Keenan KP, Soper KA, Smith PF, Ballam GC, Clark RL (1996) Diet, overfeeding, and moderate dietary restriction in control Sprague-Dawley rats: I. Effects on spontaneous neoplasms. Toxicol Pathol 23:269–286

    Article  Google Scholar 

  • Lenth RV (2001) Some practical guidelines for effective sample size determination. Am Stat 55:187–193

    Article  Google Scholar 

  • Liu P, He X, Chen D, Luo Y, Cao S, Song H, Ting L, Kunlun H, Xu W (2012) A 90-day subchronic feeding study of genetically modified maize expressing Cry1Ac-M protein in Sprague-Dawley rats. Food Chem Toxicol 50:3215–3221

    Article  PubMed  CAS  Google Scholar 

  • MacKenzie SA, Lamb I, Schmidt J, Deege L, Morrisey MJ, Harper M, Layton RJ, Prochaska LM, Sanders C, Locke M, Mattsson JL, Fuentes A, Delaney B (2007) Thirteen week feeding study with transgenic maize grain containing event DAS-Ø15Ø7-1 in Sprague-Dawley rats. Food Chem Toxicol 45:551–562

    Article  PubMed  CAS  Google Scholar 

  • Office of Science and Technology Policy (2000) Federal policy on research misconduct—preamble for research misconduct policy. US Federal Register 65, pp 76260–76264

  • Otabe A, Fujieda T, Masuyama T (2011) Chronic toxicity and carcinogenicity of N-[N-[3-(3-hydroxy-4-methoxyphenyl) propyl]-α-aspart. Food Chem Toxicol 49:S35–S48

    Article  PubMed  CAS  Google Scholar 

  • Potter VR (1971) Bioethics: bridge to the future. Prentice Hall, New Jersey

  • Prejean JD, Peckham JC, Casey AE, Griswold DP, Weisburger EK, Weisburger JH (1973) Spontaneous tumors in Sprague-Dawley rats and Swiss mice. Cancer Res 33:2768–2773

    PubMed  CAS  Google Scholar 

  • Owino O (2012) Scientists torn over Kenya’s recent GM food ban (http://www.nature.com/news/scientists-torn-over-kenya-s-recent-gm-food-ban-1.11929)

  • Sakamoto Y et al (2008) A 104-week feeding study of genetically modified soybeans in F344rats. J Food Hyg Soc Jpn 49:272–282 (Article in Japanese; Abstract, Figures and Tables in English)

    Google Scholar 

  • Séralini GE, Clair E, Mesnage R, Gress S, Defarge N, Malatesta M, Hennequin D, Spiroux de Vendômois J (2012) Long term toxicity of a Roundup herbicide and a Roundup-tolerant genetically modified maize. Food Chem Toxicol 50:4221–4231

    Article  PubMed  Google Scholar 

  • Snell C, Bernheim A, Berge JB, Kuntz M, Pascal G, Paris A, Ricroch AE (2012) Assessment of the health impact of GM plant diets in long-term and multigenerational animal feeding trials: a literature review. Food Chem Toxicol 50:1134–1148

    Article  PubMed  CAS  Google Scholar 

  • Suzuki H, Mohr U, Kimmerle G (1979) Spontaneous endocrine tumors in Sprague-Dawley rats. J Cancer Res Clin Oncol 95:187–196

    Article  PubMed  CAS  Google Scholar 

  • Tang M, Xie T, Cheng W, Qian L, Yang S, Yang D, Cui W, Li K (2012) A 90-day safety study of genetically modified rice expressing rhIGF-1 protein in C57BL/6J rats. Transgenic Res 21:499–510

    Article  PubMed  CAS  Google Scholar 

  • Thompson SW, Huseby RA, Fox MA, Davis CL, Hunt RD (1961) Spontaneous tumors in the Sprague-Dawley rat. J Natl Cancer Inst 27:1037–1057

    PubMed  CAS  Google Scholar 

  • Twyman RM, Ramessar K, Quemada H, Capell T, Christou P (2009) Plant biotechnology: the importance of being accurate. Trends Biotechnol 27:609–612

    Article  PubMed  CAS  Google Scholar 

  • Vargas L (2012) Port of Lorient: operation anti-GMO. France TV (http://www.microsofttranslator.com/bv.aspx?from=fr&to=en&a=http://bretagne.france3.fr/2012/11/23/lorient-des-militants-anti-ogm-detruisent-du-soja-importe-149823.html)

  • Weljie AM, Bondareva A, Zang P, Jirik FR (2011) 1H NMR metabolomics identification of markers of hypoxia-induced metabolic shifts in a breast cancer model system. J Biomol 49:185–193

    Article  CAS  Google Scholar 

  • WHO (2011) Guidelines for drinking-water quality, 4th edn. World Health Organization, Geneva

    Google Scholar 

  • Wiklund S, Johansson E, Sjostrom L, Mellerowicz EJ, Edlund U, Shockcor JP, Gottfries J, Moritz T, Trygg J (2008) Visualization of GC/TOF-MS-based metabolomics data for identification of biochemically interesting compounds using OPLS class models. Anal Chem 80:115–122

    Article  PubMed  CAS  Google Scholar 

  • Zhu Y, He X, Luo Y, Zou S, Xin Z, Huang K, Xu W (2012) A 90-day feeding study of glyphosate-tolerant maize with the G2-aroA gene. Food Chem Toxicol 18:280–287

    Google Scholar 

Supplementary references

Download references

Acknowledgments

Research at the Universitat de Lleida is supported by MICINN, Spain (BFU2007-61413; BIO2011-23324; BIO02011-22525; PIM2010PKB-00746); European Union Framework 7 Program-SmartCell Integrated Project 222716; European Union Framework 7 European Research Council IDEAS Advanced Grant (to PC) Program-BIOFORCE; COST Action FA0804: Molecular farming: plants as a production platform for high value proteins; Centre CONSOLIDER on Agrigenomics funded by MICINN, Spain. Authors declare that their funding is exclusively from public bodies.

Author information

Authors and Affiliations

Authors

Corresponding author

Correspondence to Paul Christou.

Rights and permissions

Reprints and permissions

About this article

Cite this article

Arjó, G., Portero, M., Piñol, C. et al. Plurality of opinion, scientific discourse and pseudoscience: an in depth analysis of the Séralini et al. study claiming that Roundup™ Ready corn or the herbicide Roundup™ cause cancer in rats. Transgenic Res 22, 255–267 (2013). https://doi.org/10.1007/s11248-013-9692-9

Download citation

  • Received:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s11248-013-9692-9

Keywords

Navigation