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Bill Heydens

Former Regulatory Product Safety Assessment Lead, Bayer Crop Science

Expert Bio

I received my Ph.D. in Toxicology, and after joining Monsanto (now Bayer), I became increasingly interested in various aspects of agricultural safety assessment.  I have now spent 31 years conducting studies and comprehensive assessments to evaluate the safety of chemical and biotechnology products for humans, domestic animals and the environment.  

Studies, Articles and Answers

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Question

Q: I gather that primary purpose of 'Roundup Ready' crops is to create higher crop yields by way of adding the ability to apply Roundup herbicide throughout the growth season rather than only before planting as with traditional farming. How do you respond t

Answered By Bill Heydens - Nov 25, 2014

A: Several questions are posed, and each is important to address. This response is broken into two sections:   Samsel and Seneff, with information about glyphosate reregistration Independent research   The Samsel and Seneff paper attempts to link glyphosate to a list of health problems without providing any data or evidence to support these claims. These are all variables that are increasing over a period of time and therefore provide a sense of correlation, but this is not to be confused with causation. Included at the bottom are some responses already available on GMOAnswer [...]

By Community Manager - Nov 25, 2014

A: Several questions are posed, and each is important to address. This response is broken into two sections: Samsel and Seneff, with information about glyphosate reregistration Independent research   The Samsel and Seneff paper attempts to link glyphosate to a list of health problems without providing any data or evidence to support these claims. These are all variables that are increasing over a period of time and therefore provide a sense of correlation, but this is not to be confused with causation. Included at the bottom are some responses already available on GMOAnswers.com th [...]

GMO Basics Health & Safety