That dreamy retirement home overlooking the 9th hole?

Well, it might come with more than just a beautiful view—and not in a good way.

New research out of the Barrow Neurological Institute has uncovered a startling connection:  People who live near golf courses—particularly within one mile—face more than double the risk of developing Parkinson’s disease.

The risk jumps even higher if their drinking water comes from municipal systems that service a golf course, especially in areas where groundwater is vulnerable to contamination.

This isn’t just a local concern. With over 16,000 golf courses in the U.S., nearly a quarter of which are integrated into residential communities, this study has nationwide implications.

The likely culprit? Pesticides.

Golf courses, in their quest for weed-free, picture-perfect greens, use up to 15 times more pesticide than farms in some European countries, the study notes.

These chemicals include substances like chlorpyrifos, 2,4-D, maneb, and organophosphates—compounds that have previously been linked to Parkinson’s-like damage in the brain, specifically by destroying dopamine-producing neurons.

And the effects aren’t subtle.

Compared to people living more than six miles from a golf course, those within a one-mile radius had a 126% greater chance of developing Parkinson’s. People living one to two miles away had nearly three times the risk.

Worse still, the study found that municipal water users in areas that included a golf course had almost double the odds of developing Parkinson’s compared to users in systems without one.

If that golf course also happened to be in a region with vulnerable groundwater—like shallow bedrock or porous soil—the risk jumped by 82%.

This means exposure isn’t just happening through the air. Contaminated drinking water may be another pathway, potentially affecting thousands who don’t even golf.

With nearly 1 million Americans living with Parkinson’s disease, and numbers expected to rise, this new data points to one of the most concerning environmental links to date.

While certain genetic variants like the ApoE4 gene are known to increase Parkinson’s risk, most cases are not hereditary. That’s why researchers have long suspected environmental toxins—especially pesticides—may be playing a key role.

This study, published in JAMA Network Open, adds weight to that theory.

Interestingly, the researchers also found urban golf courses may pose a greater risk. More densely packed neighborhoods mean more people are exposed to airborne pesticides, especially on windy days or during peak maintenance times.

And because 90% of people living within 3 miles of a golf course also got their water from shared municipal sources, many residents are likely exposed from both the air and their tap.

While you don’t need to abandon your dream of peaceful, golf course-adjacent living just yet, this study should prompt a few precautions:

  • Know your water source. If your home is part of a municipal system that services a golf course—especially in an area with vulnerable groundwater—consider investing in a high-quality water filtration system.
  • Be mindful of air exposure. On days when courses are being sprayed, it’s wise to close windows, limit outdoor activity, and avoid letting children or pets play on nearby greens.
  • Push for policy. The researchers suggest that public health policies reducing golf course pesticide use or limiting it in groundwater-sensitive regions could reduce the Parkinson’s burden.

Most importantly, this study reinforces something we’ve said here before: Environmental health is personal health. The chemicals we allow into our air, soil, and water don’t just impact the environment—they impact our brains, our movement, and our future.

To protecting your health,

SIGNOFF

P.S. These common vitamins help fight Parkinson’s?


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Allan Spreen, M.D.
Dr. Allan Spreen, Chief Medical Advisor

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