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The Link Between Pesticides and Thyroid Health

Over the last few years there has been an overwhelming amout of reserach into pesticides and Thyroid Health. Research has shown that exposure to certain pesticides and chemicals commonly found in the environment may have detrimental effects on thyroid function. These substances, known as endocrine-disrupting chemicals (EDCs), can interfere with hormonal balance and thyroid health. (*) In todays artice, we will review some of the pesticides that have been identified particularly damaging to the thyroid gland.

Organophosphate Pesticides:

Organophosphate pesticides, commonly used in agriculture and household pest control, have been associated with thyroid-disrupting effects. These chemicals can interfere with thyroid hormone synthesis, secretion, and metabolism, leading to thyroid dysfunction and disrupting the body’s endocrine system.

Pesticides and your thyroid


Glyphosate, the active ingredient in many herbicides, including the popular weed killer Roundup, has been linked to thyroid disruptions. Studies have shown that glyphosate exposure can impact thyroid hormone levels, thyroid function, and thyroid gland morphology, indicating its potential to interfere with normal thyroid activity.(*) Glyphosate has also been implicated in Hashimoto’s.


Perchlorate is a chemical compound used in rocket fuel, fireworks, and certain industrial processes. It has been recognized for its ability to inhibit iodide uptake by the thyroid gland, which is essential for thyroid hormone production. (*) Prolonged exposure to perchlorate can disrupt thyroid function and contribute to thyroid disorders like hypothyroidism. (*)

Polychlorinated Biphenyls (PCBs):

PCBs are a group of industrial chemicals once widely used in electrical equipment, paints, and plastics. These persistent organic pollutants have been linked to thyroid disruption, including altered thyroid hormone levels and thyroid dysfunction. (*) PCB exposure can contribute to thyroid-related health issues and impact overall thyroid function.

Bisphenol A (BPA) and Your Thyroid

Although not a pesticide, BPA is a common EDC found in plastics, food containers, and other consumer products. BPA has been shown to interfere with thyroid hormone production and function, leading to thyroid dysfunction including autoimmune Hashimoto’s. (*) Exposure to BPA can disrupt thyroid activity and contribute to endocrine imbalances.(*)


Dioxins are a group of toxic chemicals produced as byproducts of industrial processes involving chlorine, such as waste incineration and pesticide manufacturing. These compounds can accumulate in the environment and in the food chain, posing a risk to human health. Dioxin exposure has been associated with thyroid disturbances and can impact thyroid hormone levels and thyroid function. (*)

Reducing Pesticide Exposure When You Have Thyroid Problems

Given the potential harm that certain pesticides and EDCs can pose to thyroid health and the immune system, it is crucial to minimize exposure to these substances whenever possible. Individuals can adopt the following strategies to reduce their risk of thyroid disruption from environmental chemicals:

  1. Choose Organic Foods: Selecting organic produce and foods that are less likely to be contaminated with pesticides can help lower exposure to thyroid-disrupting chemicals like organophosphates and glyphosate.
  2. Avoid Chemical-based Products: Opt for environmentally friendly and chemical-free alternatives for household cleaning products, personal care items, and pesticide use to reduce exposure to thyroid-disrupting substances.
  3. Filter Drinking Water: Use water filtration systems that can remove contaminants like perchlorate and other chemicals known to interfere with thyroid function from drinking water sources.
  4. Limit Plastic Use: Minimize exposure to BPA by avoiding plastic containers and choosing BPA-free products whenever possible to mitigate potential thyroid hormone disruptions associated with this EDC.
  5. Consult A Functional Medicine Practitioner: If concerned about thyroid health and potential exposure to thyroid-disrupting chemicals, individuals should consult a Functional Medicine Practitioner. Consulting a functional medicine practitioner can offer a personalized and holistic approach to health and wellness that focuses on addressing the root causes of health issues, rather than solely managing symptoms for guidance on monitoring thyroid function and mitigating risks associated with environmental toxins.

Here’s what You should Remember About Today’s article on Pesticides and Thyroid Health.

Pesticides can have detrimental effects on thyroid health. By raising awareness of the impact of pesticides and EDCs on thyroid health and promoting proactive steps to reduce exposure to these substances, individuals can take preventive measures to safeguard their thyroid function and overall well-being.

Understanding the potential risks associated with environmental chemicals and implementing risk mitigation strategies can support thyroid health and contribute to a healthier and more resilient endocrine system.

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