Glyphosate Exposure: Why Some People May Be More Vulnerable

Dr. Kurt Woeller | Sunrise Functional Medicine

Recent headlines about glyphosate found in common food products have once again brought this widely used herbicide into the public spotlight. While news stories often focus on a single product or isolated event, the larger issue is much broader. Glyphosate has become one of the most commonly used herbicides in modern agriculture, making low-level exposure a routine part of everyday life for many people.

From a functional medicine perspective, the goal is to better understand how chronic exposures may contribute to long-term health concerns, particularly in individuals already struggling with digestive disorders, neurological symptoms, immune dysfunction, chronic inflammation, or metabolic disease.

The Skinny on Glyphosate

Glyphosate is a broad-spectrum herbicide introduced in the 1970s and is the primary active ingredient in many weed-control products, including Roundup®. It is used extensively in agriculture to control weeds and, in some cases, to dry crops before harvest. Today, glyphosate is applied to millions of acres of farmland each year and is commonly used on crops such as wheat, oats, corn, soybeans, barley, legumes, and other grains. Because of its widespread agricultural use, varying amounts of glyphosate residues have been detected in a variety of foods, water sources, soil, and even household dust.

For most people, dietary intake represents the primary source of exposure, although individuals living near agricultural areas or working in farming, landscaping, or grounds maintenance may experience higher levels of exposure over time.

Looking Beyond Acute Toxicity

One of the challenges in understanding glyphosate is that discussions often focus on whether it causes immediate illness. Functional medicine approaches the question differently. Instead of asking whether a single exposure causes disease, practitioners consider whether repeated, low-level exposure over months or years may place additional stress on the body’s natural regulatory systems.

Environmental exposures rarely act alone. Rather, they become one piece of a much larger picture that includes genetics, nutrition, gut health, immune function, stress, sleep, and other lifestyle factors. For some individuals, reducing the overall toxic burden may become an important part of restoring optimal health.

The Gut Microbiome: A Primary Area of Interest

One of the most active areas of glyphosate research involves its potential effects on the gut microbiome. Although human cells do not rely on the biochemical pathway that glyphosate targets in plants, many beneficial intestinal bacteria do. Researchers have suggested that chronic exposure may alter the diversity and balance of gut microorganisms, potentially allowing less desirable organisms to become more dominant.

A healthy gut microbiome performs far more functions than simply helping digest food. Beneficial bacteria help regulate immune function, produce important nutrients, maintain the intestinal barrier, and communicate with the nervous system. Disruptions in this complex ecosystem—often referred to as dysbiosis—have been associated with a wide variety of chronic health conditions. While research is still evolving, many scientists are investigating whether environmental chemicals such as glyphosate may contribute to these imbalances in susceptible individuals.

Potential Effects Beyond the Digestive System

Scientists continue to explore how glyphosate exposure may influence other body systems. Several observational studies have associated higher glyphosate exposure with markers of metabolic dysfunction, including impaired glucose regulation and changes in lipid metabolism. Other research has examined possible effects on neurological health, including cognitive function, mood disorders, and neurodegenerative diseases. Laboratory studies have also investigated whether glyphosate contributes to oxidative stress and chronic inflammation—two biological processes that play important roles in many chronic illnesses.

Research has further explored possible relationships between glyphosate exposure and liver function, kidney health, endocrine signaling, and immune regulation. While many of these findings continue to be studied, they reinforce the importance of understanding environmental exposures as one potential contributor among many that influence long-term health.

Why Functional Medicine Considers Environmental Toxins

One of the defining principles of functional medicine is identifying underlying contributors to illness rather than simply treating symptoms. For individuals experiencing persistent digestive complaints, chronic fatigue, cognitive changes, autoimmune disorders, unexplained inflammation, or metabolic dysfunction, environmental toxins may deserve consideration alongside nutritional deficiencies, infections, hormone imbalances, food sensitivities, and lifestyle factors.

This does not mean glyphosate is the primary cause of every chronic condition. Rather, it represents one possible piece of a much larger clinical puzzle. Evaluating environmental exposures allows practitioners to develop more personalized strategies aimed at reducing unnecessary toxic burden while supporting the body’s natural healing mechanisms.

Can Glyphosate Be Tested?

Because glyphosate is rapidly eliminated through the urine, laboratory testing typically measures recent exposure rather than long-term accumulation. Urinary glyphosate testing may be appropriate for individuals with significant occupational exposure, those living near heavily treated agricultural areas, or patients with chronic health concerns where environmental toxicants are being evaluated as part of a comprehensive functional medicine assessment. Testing is most valuable when interpreted alongside a patient’s medical history, dietary habits, environmental exposures, and other laboratory findings rather than viewed as an isolated result.

Who May Benefit from Environmental Toxin Testing?

Not everyone requires testing for glyphosate or other environmental chemicals. However, evaluating environmental exposures may be appropriate for individuals with complex or chronic health concerns where multiple contributing factors are suspected. Dr. Woeller has long recognized the importance of investigating environmental toxicants in children and adults with autism spectrum disorders, developmental delays, and other neurodevelopmental conditions. Research continues to explore how environmental exposures may interact with genetics, immune function, mitochondrial health, gut microbiome balance, and detoxification pathways—areas that are often evaluated as part of a comprehensive functional medicine assessment.

Environmental toxin testing may also be considered for individuals experiencing chronic fatigue, persistent gastrointestinal symptoms, cognitive difficulties, chemical sensitivities, autoimmune disorders, or unexplained neurological complaints. While laboratory testing does not provide all the answers, it can offer valuable information that helps guide a personalized treatment plan when interpreted within the context of the individual’s overall health history.

Practical Ways to Reduce Exposure

Although it is nearly impossible to eliminate glyphosate exposure completely, there are several practical steps that may help reduce overall exposure. Choosing organically grown foods whenever practical—particularly grains, oats, wheat products, and legumes—has been shown in several studies to reduce urinary glyphosate levels within a relatively short period of time. Thoroughly washing fruits and vegetables, purchasing food from local growers who use sustainable farming practices when possible, and reducing highly processed foods may also help decrease exposure.

Maintaining a healthy gut microbiome through a nutrient-dense diet rich in vegetables, fiber, and fermented foods supports one of the body’s primary defenses against many environmental stressors. Supporting normal liver function, staying well hydrated, exercising regularly, and minimizing unnecessary chemical exposures in the home are additional lifestyle strategies that contribute to overall health. Rather than focusing on a single chemical, these habits help reduce the cumulative burden created by many environmental toxins encountered throughout daily life.

A Balanced Perspective

Glyphosate remains one of the most studied agricultural chemicals in the world, and research continues to evolve. For functional medicine practitioners, the conversation is about recognizing opportunities to improve health by reducing unnecessary exposures wherever possible. Small lifestyle changes, combined with personalized medical evaluation when appropriate, can help support the body’s resilience in an increasingly complex environment. Environmental toxins are only one piece of the health puzzle—but they are a piece worth understanding. By identifying potential sources of exposure, supporting the body’s natural detoxification systems, and addressing the underlying factors that influence wellness, patients can take informed steps toward improving their long-term health.

Staying Ahead of Toxicity

If you’re concerned about environmental toxin exposure or are living with chronic symptoms that have been difficult to explain, a comprehensive functional medicine evaluation may help identify underlying factors affecting your health. Dr. Kurt Woeller works with children and adults around the world to investigate complex medical conditions, including environmental toxicant exposure, and develop personalized strategies that support long-term wellness and improved quality of life. Learn more and request a consultation >>