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The Troubling Role of Glyphosate in COVID-19

In this interview, Stephanie Seneff, Ph.D., a senior research scientist at MIT, reviews the health impacts of glyphosate. She has just finished writing a book about glyphosate called “Toxic Legacy: How the Weedkiller Glyphosate is Destroying Our Health and the Environment,” which is expected to be published in June 2021.

For years, glyphosate was assumed safe and claims of toxicity were vehemently denied. But in recent years, studies on glyphosate have been demonstrating toxicity even at very low levels. Seneff also believes glyphosate exposure may be a key player in cases of severe COVID-19, which we’ll unravel in this interview.

Glyphosate’s Mechanism of Action

The “gly” in glyphosate actually stands for the amino acid glycine. The glycine amino acid in glyphosate has a methylphosphonate group attached to its nitrogen atom, which is responsible for its effects and toxicity.

After studying the research literature on glyphosate, Seneff has reached the conclusion that your body sometimes substitutes glyphosate for the amino acid glycine when it is constructing proteins, and this can have devastating consequences in some cases. The proteins created with glyphosate instead of glycine simply don’t work because glyphosate is much larger than glycine and also negatively charged, and as a result this alters important physical characteristics.

Monsanto’s own research, dating back to the late 1980s, shows that glyphosate accumulates in various tissues, even though they claim it doesn’t.1 The Monsanto researchers proposed that it was “incorporated into” the proteins in the tissues. This is not widely appreciated, even in the natural health community.

Now, if you have a distorted analog of glycine (in the form of glyphosate), the protein constructed from it is not going to work like it’s supposed to. In her book, Seneff details the amino acids in proteins that are most susceptible to damage because of what she calls a “glyphosate susceptible motif.”

It’s really fascinating biology and so terrifying when you think of the potential consequences, if I'm right,” she says. “It matches so well with all the diseases that are going up dramatically in our society that I really think I'm onto something huge here.

An aromatic amino acid called EPSP synthase is a critical enzyme that almost surely gets disrupted by glyphosate through this mechanism of substituting for glycine. This gets a bit technical, but it is important. The plant version of EPSP synthase binds a phosphate group in its substrate phosphoenolpyruvate at a site where there is a highly-conserved glycine residue (highly conserved usually means that it is critical for proper function). 

It has been shown experimentally that, if you change the DNA code so that the glycine is substituted by an amino acid called alanine (one extra methyl group), the enzyme becomes completely insensitive to glyphosate at any concentration. It also takes a hit on phosphate binding because of the extra methyl group, but you can tweak another amino acid nearby to fix this problem, while still keeping its insensitivity to glyphosate. 

Researchers from Dow-Dupont did exactly this to a maize version of EPSP synthase using CRISPR technology and were able to create synthetically a version of the maize’s own EPSP synthase that was completely resistant to glyphosate. The title of this paper is: “Desensitizing Plant EPSP Synthase to Glyphosate: Optimized Global Sequence Context Accommodates a Glycine-to-Alanine Change in the Active Site.”2

The shikimate pathway is the pathway that produces aromatic amino acids, which are essential to humans as we cannot create these amino acids in our body. The argument is we're not susceptible to glyphosate because our cells don't have EPSP synthase — in fact, they don’t have the entire shikimate pathway.

However, our gut microbes do have that pathway, and they use it to make essential amino acids for the host. So, our gut microbes are indeed affected by glyphosate, and when they’re damaged, our health can suffer in any number of ways.

But what might be an even more devastating problem with glyphosate is the way it probably messes up a large number of proteins that bind phosphate at a site where there is at least one, and often three, highly conserved glycine residues. Glyphosate slips its methylphosphonate group into the spot that is supposed to be where phosphate from the substrate fits snugly. Phosphate can’t bind because glyphosate is in the way. 

The arguments for why glyphosate specifically disrupts proteins that depend on glycine for phosphate binding are described more fully in a paper Seneff published together with colleagues arguing that glyphosate is a major factor in kidney failure among young agricultural workers in Central America.3

The Importance of Deuterium

Laszlo Boros is a professor of pediatrics at UCLA and an expert on deutenomics, “the science of autonomic deuterium discrimination in nature.”4 After reading one of Seneff’s papers, he contacted her, suggesting she look into deuterium.

I was blown away, and I immediately saw the connection to glyphosate,” she says. “This was a year ago in December, and I've just been reading everything I can on deuterium since then and hooking it to glyphosate. It's just astonishing what I found, even, ultimately, [linking it] to COVID-19.

It's been quite a year for me in terms of major breakthroughs in my understanding of how metabolism works and how it's getting messed up by glyphosate, and then how that's causing us to not be able to effectively deal with COVID-19.

In normal physiology, your cells, specifically the mitochondria, function to help deplete your body of deuterium. Deuterium is a naturally occurring isotope of hydrogen. If you didn’t already know, deuterium is also known as heavy hydrogen, because it has a neutron in addition to the proton and electron in the hydrogen atom.

Provided your cell is healthy, it has deuterium-depleting enzymes and organelles that help remove deuterium from your cells. If your mitochondria are damaged by glyphosate, they’re not going to be able to eliminate the deuterium properly.

Deuterium is like iron in the way that it’s both essential in the right amounts and toxic in excess. Hydrogen is the smallest atom and by far the most common atom in your body. Deuterium, being a heavy hydrogen, has one extra neutron, in addition to the normal proton and electron that regular hydrogen has.

Now, your cells are surrounded by structured water, which is negatively charged and contributes to your body’s energy production by supplying deuterium-depleted hydrogen to lysosomes and mitochondria. The structured water is maintained by sulfates, which makes sulfate extremely important for health. Sulfate is made dysfunctional by glyphosate, which in turn destroys structured water, resulting in impaired energy production in the cell.5

The mitochondria have [a] membrane, which has a part inside the membrane that's really, really important,” Seneff says. “That's where you have those protons, and you really don't want it to be deuterons. This is what Laszlo brought home to me.

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