What They Put On It Before You Eat It

Earlier this week we covered what happened to the wheat plant itself. The hybridization, the protein composition shift, the milling losses, the methylation problems from synthetic folic acid. That's the story of what the grain became between 1965 and today.

This post is about what happens to it in the field and after it leaves the field.

By the time that wheat arrives in your bread, your pasta, your crackers, your cereal, it has been through a set of interventions that would be unrecognizable to anyone farming fifty years ago. If you're just joining this series, start here for the broader case against wheat. It may look like flour. It is nowhere near the same thing. The farming process looks completely different than it did sixty years ago, sometimes for the better, often for the worse.

The Pre-Harvest Spray You've Never Heard Of

Most people know glyphosate as the active ingredient in Roundup. Most people think of it as something that gets sprayed on crops to kill weeds. That's true, but it's not the whole story with wheat.

A significant portion of commercial wheat in the United States and Canada is sprayed with glyphosate right before harvest. Not primarily to kill weeds. To kill the wheat plant itself. This happens in the field, in the final days before the grain is cut.

Here's why. Wheat doesn't ripen uniformly across a field. Different plants mature at different rates. If you wait for every plant to be fully dry before harvesting, you lose time and money. So farmers spray the field with glyphosate ten to fourteen days before harvest. The dying plant pulls moisture out of the grain rapidly, drying it down faster and more evenly. It also triggers the plant to produce more seed as a stress response, which increases yield. And it produces a cleaner yield because there are no weeds. The practice is called pre-harvest desiccation, and it is widespread.

The consequence is that the wheat plant is actively absorbing glyphosate during the final days before harvest, the period when the grain is developing and the plant is under maximum stress. Residue levels in grain following pre-harvest desiccation are consistently higher than residue levels from standard weed control applications earlier in the season. You're not eating trace residues from a spray that happened months ago. You're eating grain that was soaked in it right before it was cut.

Here's how the regulatory math works on that, and this is about eighty percent of the reason why I dislike the government. In the 1990s, the allowable level of glyphosate on oats was 0.1 parts per million. To put that in perspective: if you had a million marbles, 0.1 of them could be glyphosate. That's one tenth of one marble out of one million. That's one second out of 115 days. It was set that low because that was considered the threshold below which selling the product was legal. Above it, the product was adulterated and couldn't be sold.

When the industry moved to pre-harvest desiccation and that practice started producing much higher residue levels in the grain, they didn't stop the practice. They petitioned the EPA to raise the limit. They got a 20,000 percent increase. The new limit was set at whatever level the product tested at after desiccation. The limit wasn't based on what's safe. It was based on what they needed it to be to keep selling the product.

In February 2026, Florida's Healthy Florida First initiative released testing results from eight popular bread products. Six of the eight tested positive for glyphosate. The highest levels were 190 parts per billion in Nature's Own Butter Bread and 132 parts per billion in Nature's Own Perfectly Crafted White. Wonder Bread, Sara Lee Honey Wheat, and both Dave's Killer Bread varieties also tested positive. Surgeon General Dr. Joseph Ladapo stated that chronic glyphosate exposure is linked to gut microbiome changes, liver inflammation, and adverse neurologic effects. Remember: the original oat limit before desiccation practice began was 0.1 parts per million. That is 100 parts per billion. Nature's Own tested at 190. This is not a fringe concern.

The Shell Game With the Safety Data

Monsanto and Bayer have maintained for decades that glyphosate is safe. And in a very narrow technical sense, their data supports that claim. It's the same narrow technical sense in which the cigarette industry claimed tobacco didn't cause cancer. They couldn't prove it caused cancer, therefore it didn't cause cancer. That's the old shitty cop-out that's been used to protect every harmful product in modern history. We can't prove it, therefore it's fine. Keep selling it.

The problem is what they test and what they sell are two different things.

What gets sold to farmers and ends up on your grocery store shelves is not glyphosate. It's a glyphosate-based herbicide, a formulation that combines glyphosate with adjuvants designed to make it more effective. The primary adjuvant in Roundup for most of its history was POEA, polyethoxylated tallow amine. POEA is what breaks down the waxy outer layer of the plant to allow the glyphosate to penetrate. It does the same thing to human cells, which are also waxy and fatty. It breaks them down and delivers the glyphosate inside.

Pure glyphosate actually has difficulty entering your bloodstream on its own. It needs the surfactants to get through. When the formulation is specifically engineered to penetrate the dermis of a plant, it does the same thing to your skin. Approximately 30 percent of what contacts your skin enters your bloodstream. Ten percent of cardiac output goes through bone marrow. And bone marrow is where glyphosate disrupts the cell replication cycle.

In 1983, Monsanto conducted a rat study testing where glyphosate stays longest in the body. They never published it publicly. But the EPA referenced it, so we know what it found. The tissue where glyphosate stayed the longest was bone. Current thinking is that glyphosate attaches to calcium in the bone matrix, creating a slow-release repository that keeps feeding back into circulation long after the initial exposure. This is part of why people who switch to organic diets still test positive for glyphosate in their urine. It doesn't clear quickly. It has a storage depot in your bones.

Research shows glyphosate is absorbed approximately ten times faster into the body when formulated with POEA than when tested in isolation. The co-formulants in glyphosate-based herbicides also disrupt aromatase activity at concentrations below what's found in agricultural applications. Aromatase is critical for estrogen metabolism. Disrupting it feeds estrogen-dependent cancers and may be part of what's driving the significant increase in infertility and the demand for fertility intervention we're seeing across the population. It's worth noting that PCOS, which is driven in part by estrogen and androgen imbalance, has been rising at the same time glyphosate use has expanded. These effects don't occur with glyphosate alone. They're a product of the formulation.

The European Union recognized this and demanded reformulation before allowing the product on European markets. Monsanto reformulated it around 2015. By some measures the reformulated version is 20 times less toxic than what we use in the United States. Then, according to internal emails that became public through litigation, an executive asked why they would continue making a harmful product when they could make a safer one. They didn't change what they sold in the United States.

It's the same thing the food industry does. They reformulate products for European markets, removing the dyes and additives banned there, and leave all of it in what they sell here. It's not an accident. It's a choice.

The sad part is our government and all the regulatory agencies know they are doing it and look the other way. Most likely due to corporate capture, the revolving door between regulator and executive, from executive to higher regulator to board member. It's baked into the system. They want industry experts regulating the industries. And industry experts protect industries. The Monsanto Papers, the internal company documents released through discovery in the Roundup cancer litigation, document a Monsanto toxicologist writing internally: you cannot say that Roundup is not a carcinogen because we have not done the necessary testing on the formulation to make that statement. The company said publicly what it could not support internally.

This is also why you hear people say they can go to Europe and eat bread or pasta without feeling sick afterward. The formulation banned there is the one still sold here. Same crop. Different chemistry. Different gut response.

The International Agency for Research on Cancer classified glyphosate as Group 2A, probably carcinogenic to humans, in 2015. The primary cancer in the research is non-Hodgkin's lymphoma. The EPA only required safety testing on the pure glyphosate molecule, not on the formulated product actually being used. The EU used the formulated glyphosate-based herbicide in their assessment. That's the primary reason their conclusions differ from the EPA's. The EU tested what people are actually exposed to. The EPA tested a molecule that nobody sprays in its pure form.

The gut microbiome research on glyphosate is contested, and I'll say that plainly. But here's the problem with the studies claiming it doesn't disturb the microbiome: we don't have good baseline microbiome data to begin with. We don't have great gut microbiome characterization across the board, period, full stop. So how exactly are they determining that glyphosate isn't disturbing it? And did they test people who have never consumed glyphosate-sprayed food, who have been completely removed from the industrial food chain? No. They didn't. So the claim that it doesn't affect the microbiome is built on a fundamentally flawed premise. Same playbook the cigarette industry ran. Draw your own conclusions.

Fluoride and the Gut Barrier

The glyphosate story is about what gets sprayed on the grain in the field. The fluoride story is about what you wash it down with.

Most municipal water in the United States is fluoridated. There is growing evidence that fluoride functions as a neurological retardant at the population level, and the mechanism matters here. Fluoride and iodine are both halides, meaning they compete for the same receptors. When fluoride is chronically present, it displaces iodine. Iodine is essential for thyroid function. Displace enough of it and you get subclinical hypothyroidism, slowed metabolism, cognitive slowing. In severe cases this is called cretinism. This mechanism is also directly relevant to Hashimoto's thyroiditis, where the thyroid is already under autoimmune attack and any additional suppression from iodine displacement compounds the dysfunction. At population scale, even a mild version of this effect has consequences. That conversation deserves its own post. But today the relevant issue is what fluoride does to the intestinal barrier.

Fluoride disrupts tight junction proteins through a specific mechanism involving calcium-dependent RhoA/ROCK signaling and myosin light chain kinase activation. That mechanism causes the cytoskeleton of intestinal epithelial cells to contract, pulling the tight junctions apart. The same MLCK pathway is involved in the zonulin-mediated permeability response triggered by gliadin from the last post.

Both pathways converge on the same cellular machinery. When both are active simultaneously, the effects are likely additive, and possibly more than additive. You have gliadin opening the tight junctions through the zonulin pathway, and fluoride opening them through a separate calcium signaling pathway, both happening in the same gut, every day. The specific interaction between these two mechanisms hasn't been extensively studied, but the mechanistic overlap is documented.

If you're eating modern wheat three times a day and drinking fluoridated municipal water, you have two independent gut barrier disruption mechanisms running simultaneously. And don't forget the bread was also baked with that fluoridated water. Neither mechanism requires the other to cause problems. Together they compound.

This leaky gut, this intestinal permeability, is what's driving the increase in allergies, the rise in bloating, gas, and IBS, the explosion in autoimmune disease. If you want to understand how food sensitivities develop once the gut barrier is compromised, this post walks through the full mechanism. The glyphosate, the gliadin, and the fluoride are each making it worse. And each one makes the others more effective at doing damage.

What Processing Does on Top of All of This

The processing problem doesn't end with stripping out the nutrients, which we covered earlier this week. It continues in how the flour gets turned into food.

Commercial bread production uses industrial seed oils, primarily soybean oil, corn oil, and canola oil, as standard ingredients. These oils are extraordinarily high in omega-6 fatty acids. The omega-6 to omega-3 ratio in a typical American diet is somewhere between 15 to 1 and 20 to 1 documented. Honestly it's probably closer to 40 to 60 to 1 when you account for what most people are actually eating every day. The ratio your physiology was built for is closer to 4 to 1 or lower, probably closer to 2 to 1.

Omega-6 fatty acids are pro-inflammatory. They help with clotting and aren't entirely without purpose, but at the concentrations we're consuming them they are a significant driver of chronic inflammation. Omega-3 fatty acids are anti-inflammatory and required to produce the specialized pro-resolving mediators that terminate an inflammatory response. This is part of why I'm a strong proponent of grass-fed beef, which runs at a 1.2 to 1.5 to 1 omega-6 to omega-3 ratio. That's food as it was supposed to work.

When you bake bread with industrial seed oils, you're throwing kerosene onto a fire that's already burning. Your gut is already being hit by gliadin, glyphosate, and fluoride. Now you're adding a significant pro-inflammatory fat load on top of all of it.

Then there's heat. Commercial bread baking exposes those oils to temperatures that oxidize them, producing aldehydes and other reactive compounds. Oxidized seed oils are more inflammatory than fresh ones. The processing doesn't just add the oil. It damages it before it gets to you.

I have a sneaking suspicion that the industrial lubricants used to keep commercial milling equipment running are contributing contamination to the finished flour as well. That hasn't been adequately studied. But given everything else in this chain, it's a reasonable question to be asking.

Add the glyphosate desiccation residues, the fluoride in the water and in the baking water, the industrial seed oils, the heat oxidation, and the milling losses from the last post, and you have a food that is almost impressively engineered to create gut dysfunction, joint inflammation, systemic inflammation, and metabolic disruption. And none of this happens in isolation from your stress response. When adrenal function is depleted, cortisol output drops and your primary brake on the inflammatory response goes with it. Every one of these mechanisms compounds when the adrenal reserve is already low. Contributory to essentially every disease of modern society.

That's what makes it such a hidden problem. This stuff is cumulative. The more bread you eat, the more your gut gets leaky. The more your gut gets leaky, the more inflamed you get. The more inflamed you get, the more you crave the bread and the inflammatory foods. The more you eat the inflammatory foods, the more inflamed you get.

It is a toilet bowl of compounding problems and most people have no idea they're in it. The metabolic end of this, specifically how chronic gut inflammation drives insulin resistance and blood sugar dysregulation, is something we've covered separately and it connects directly back to everything in this post.

Do yourself a favor. Cut it out for three weeks minimum. Three to six months if you're dealing with major inflammation. If you want help working through the gut and joint side of it, that's exactly what we do.

Next post covers the corporate architecture behind how this happened and why it stays in place: the seed patent structure, the EPA capture, and the financial machinery that keeps a known harmful product in the American food supply while the rest of the developed world has moved on.

If you're in Frisco, Texas and dealing with symptoms that standard care hasn't explained, this is the kind of root cause work we do at my practice. Schedule a consultation to start finding answers.