Paraquat & Parkinson’s Disease

Paraquat is a widely used herbicide that has been linked to an increased risk of Parkinson’s disease. Farmworkers, agricultural applicators, and individuals living near treated areas may have encountered paraquat through their work or environment over many years. Many families don’t feel that manufacturers properly warned them about the risk, causing thousands to file paraquat lawsuits over Parkinson’s disease.

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Parkinson’s Disease & Paraquat Exposure

Mounting scientific evidence has linked paraquat dichloride, an herbicide often sold under the brand name Gramoxone, to Parkinson’s disease, a progressive and incurable neurological disorder that impairs movement and balance.

Multiple studies suggest that paraquat may damage the area of the brain that produces dopamine, a key chemical involved in motor control.

Those who worked near areas where paraquat was sprayed were more than twice as likely to develop Parkinson’s, according to research published in the National Library of Medicine.

While millions of pounds of paraquat are still applied in the U.S. each year, the use of paraquat has been banned in over 70 countries, including the European Union, due to its extreme toxicity.

The U.S. Environmental Protection Agency (EPA) warns that even a small accidental sip can be fatal, and only certified applicators are permitted to use paraquat products.

Despite the well-known dangers, paraquat manufacturers are accused of failing to properly warn the public for decades. Today, many people diagnosed with Parkinson’s after paraquat exposure are filing lawsuits to seek justice and financial compensation.

Parkinson’s Disease Symptoms

Parkinson’s disease is a progressive neurological disorder that affects movement and can also cause a range of non-motor symptoms. The disease often develops gradually, and early signs may be subtle, making it difficult to recognize at first.

Common Parkinson’s disease symptoms include:

  • Tremors or shaking, often starting in one hand
  • Muscle stiffness or rigidity
  • Slowed movement (bradykinesia)
  • Impaired balance and coordination
  • Changes in speech or voice
  • Reduced facial expressions
  • Difficulty with writing or other fine motor skills
  • Sleep disturbances and fatigue
  • Mood changes such as depression or anxiety
  • Cognitive changes, including memory or thinking difficulties

Understanding these symptoms can help patients and caregivers recognize Parkinson’s early, seek medical evaluation, and begin treatments or therapies that improve daily functioning and overall quality of life.

How Do I Know Parkinson’s Is from Paraquat Exposure?

To determine whether Parkinson’s disease is linked to paraquat exposure, your legal team will look closely at both your medical history and your exposure history.

Paraquat attorneys often prove the connection by:

  • Reviewing when Parkinson’s symptoms began, the type and duration of paraquat exposure, and whether that exposure occurred through work or environmental contact.
  • Working with medical experts to assess if the timing and nature of the exposure align with established scientific research showing a connection between paraquat and Parkinson’s disease
  • Gathering employment records, work histories, product use documentation, and witness statements to help establish repeated or long-term exposure
  • Relying on epidemiological studies and expert testimony to demonstrate that paraquat exposure was a substantial contributing factor to the development of Parkinson’s disease

Even if you’re not sure, we can help you determine if there’s a link between your diagnosis and past paraquat use or handling.

“Many of our clients have expressed uncertainty about whether or not their loved one’s diagnosis could be related to their job as a landscaper or farmer. Parkinson’s is often seen as an age-related condition, so there’s often a lot of confusion around its connection to paraquat. We’re here to help you figure out if the two may be connected.”

– Brendan Smith, Paraquat Exposure Lawyer

Parkinson’s Disease Treatments

There is no cure for Parkinson’s disease caused by paraquat exposure, but treatment focuses on managing symptoms and maintaining quality of life. Care plans are typically tailored to the individual and may evolve as the disease progresses.

Neurologists often combine medications, therapy, and supportive care to help control movement symptoms, address non-motor effects, and preserve independence for as long as possible.

Common treatments for Parkinson’s disease from paraquat exposure include:

  • Medications to help manage tremors, stiffness, and slowed movement
  • Physical therapy to improve balance, mobility, and strength
  • Occupational therapy to support daily activities and maintain independence
  • Speech therapy to address voice changes and swallowing difficulties
  • Lifestyle support, including exercise, nutrition guidance, and mental health care

While treatment does not reverse the disease, early and consistent management can significantly reduce symptom severity and help individuals adapt to the challenges of Parkinson’s over time.

However, the costs of Parkinson’s treatment can add up, quickly becoming more than many families can afford.

A woman who developed Parkinson’s after being exposed to paraquat on her family’s farm in New York says she spends $1,900 for a 90-day supply of just one medication needed to treat her condition.

Seek Compensation for Parkinson’s Disease Care

At Parkinson’s Lawsuits, we’re committed to making sure individuals and families understand their legal options after a Parkinson’s disease diagnosis.

If you or a loved one worked with or around paraquat and later developed Parkinson’s, you may be entitled to compensation for medical treatment, long-term care, lost income, and other related costs.

Our goal is to help you navigate this process with clarity and confidence, so you can focus on managing the disease while we work to pursue the accountability and financial support you deserve.

Get a free case review now to find out more about your options.

Paraquat & Parkinson's Disease FAQs

What herbicide causes Parkinson's disease?

Paraquat is a highly toxic herbicide that has been linked to Parkinson’s disease. Long-term or repeated exposure may increase the risk of this progressive neurological disorder.

If you or your loved one was exposed to paraquat and later developed Parkinson’s, you may qualify for compensation from a paraquat lawsuit.

How does paraquat cause Parkinson’s?

Exposure to paraquat can induce oxidative stress, a process that alters cell chemistry to the point of cell damage and death. When dopamine neuron cells in the brain are damaged and lose the ability to function properly, it can lead to Parkinson’s disease.

Individuals may develop Parkinson’s from paraquat if they:

  • Come into close proximity with recently sprayed plants
  • Get paraquat on their skin or hair
  • Mix, load, or apply the herbicide

Those with frequent and chronic exposure to the weed killer may be more likely to develop Parkinson’s disease caused by paraquat.

Can I sue over paraquat exposure?

Yes. Because paraquat manufacturers may have known about the risk but failed to provide a warning, anyone who has Parkinson’s disease and worked around paraquat may be eligible to file a paraquat lawsuit.

Filing a lawsuit may allow families to recover compensation that can help pay for medical care, therapy, and everyday support.

Written by: Parkinson's Lawsuits Team

A trusted resource for Parkinson's disease victims and their families. Our mission is to provide helpful information and connect paraquat exposure victims to the legal resources they need to reclaim their lives and pursue justice. We are dedicated to standing by families at every step, offering guidance, support, and a pathway to hope.

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