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The Sleep Disorder Quietly Doubling Your Parkinson's Risk — & How To Protect Yourself

Ava Durgin
Author:
December 03, 2025
Ava Durgin
Assistant Health Editor
Young white woman sleeping in bed
Image by Javier Díez / Stocksy
December 03, 2025

Over 50 million Americans are estimated to have obstructive sleep apnea, and here's the alarming part: 80% don't even know it

This condition affects people across all demographics—men and women, young and old, regardless of ethnicity or body type. And now, new research published in JAMA Neurology1 suggests the stakes are even higher than we thought.

The sleep-brain connection

People with untreated sleep apnea face nearly double the risk of developing Parkinson's disease compared to those who treat their condition. But before you panic, there's encouraging news: using a CPAP machine can dramatically reduce that risk, potentially protecting your brain health for decades to come.

The study analyzed electronic health records from over 11 million U.S. military veterans over a 23-year period, providing us with one of the most comprehensive looks at the sleep apnea-Parkinson's connection. 

The findings are clear: untreated sleep apnea isn't just robbing you of quality rest. It may be quietly increasing your chances of developing a neurodegenerative disease that affects millions of Americans.

Why stopping breathing at night matters for your brain

Sleep apnea is more than just snoring. It's a condition where your breathing repeatedly stops and starts throughout the night, depriving your body (and critically, your brain) of adequate oxygen. When you stop breathing during sleep, your oxygen levels drop, and your neurons can't function properly. 

Multiply those oxygen-deprived moments by hundreds of interruptions each night, then by months and years, and you begin to understand how the damage accumulates over time.

The researchers found that even after accounting for other risk factors like obesity, age, and high blood pressure, the connection between untreated sleep apnea and Parkinson's remained strong.

CPAP therapy: Your brain's protective shield

The study found that people who consistently used CPAP machines, devices that deliver continuous air pressure to keep airways open during sleep, significantly reduced their Parkinson's risk. This suggests that sleep apnea may be a modifiable midlife risk factor, meaning you actually have the power to change your odds.

While some people initially resist CPAP treatment (the masks can take getting used to), the potential long-term brain health benefits add compelling motivation to stick with it.

The takeaway

If you snore loudly, wake up gasping for air, experience excessive daytime fatigue, or your partner has noticed you stop breathing during sleep, talk to your doctor about a sleep study. Don't assume you're not at risk because you're young, fit, or female—sleep apnea doesn't discriminate.

Your brain's health tomorrow depends on the quality of sleep you're getting tonight. Treating sleep apnea isn't just about feeling more rested; it's about protecting your neurons for the long haul.