Talking Biotech: Shelley McGuire, lactation specialist: No glyphosate in breast milk; Glyphosate in wine?

Recent unpublished reports are popping up on the internet that suggest that the herbicide glyphosate is showing up at dangerous levels in a variety of places. These range from breast milk, to beer, to wine, to potato chips. There are a number of laboratories and kit manufacturers that are excited to provide a means for such analysis. In the hands of the untrained, such kits and data are nothing more than an invitation for misinterpretation or misuse.

In this week’s podcast we talk to two experts that routinely measure rare compounds. Dr. Shelley McGuire discusses her findings as a lactation specialist, describing the results in her recent paper on glyphosate in breast milk. Dr. Thomas Colquhoun speaks about the methods and kits, along with what the alleged findings in wine really mean.


Twitter @mcguiresmiguire

Thomas Colquhoun’s website

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  • Brad

    Their testing skills are “amazing”. It makes me wonder if they actually run the test, BT is denatured at 160 degrees F, yet they can find BT in snack chip. How is that possible?

    • Warren Lauzon

      That is a good question. Have not seen that claim before, but I usually stay away from any site that has “natural” or “truth” in the URL. But looking over the article, they don’t really directly say that Bt was found, they infer it by claiming that they are GMO, and in their eyes all corn is GMO, thus it must have Bt. Totally ignoring the fact that Bt has been used by organic farmers for decades. [Correction, yeah they did say that – “is full of GM Bt toxic pesticide”].

    • Denaturation is not the same as decomposition. Many protein detection methods start with the denaturation of all proteins in the sample.

      • Brad

        True, however the pesticide properties of the protein are destroyed and it’s far fetched to still claim the BT protein as toxic after being fried at +300 degrees F.

        • Well it is not toxic even when it is not heated at all. Unless you are a caterpillar of course.

          • Doug001

            Actually, frying most things at huges temperature can create carcinogens, so perhaps deep fried Glyphosate and Bt proteins may be more dangerous than the fresh stuff! (o:

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