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Higher Exhaled Carbon Monoxide Linked to 30% Lower Parkinson’s Risk

By Drooid · Sep 15, 2026, 4:28 PM UTC · How we work

Summary

UK Researchers Link CO

UK researchers and Chinese collaborators reported that higher exhaled carbon monoxide is associated with lower Parkinson’s disease risk.
The JAMA Neurology study, published September 8, enrolled more than 500,000 participants.
Never-smokers with exhaled carbon monoxide of 3 ppm or higher had about a 30% lower Parkinson’s risk.
Experts said the findings provide a biological clue, do not endorse smoking, and call for component testing.

Summary

Michael J. Fox Honored

Michael J. Fox received the Bob Hope Humanitarian Award at the 2026 Emmy Awards.
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UK Researchers Link CO

UK researchers and Chinese collaborators reported that higher exhaled carbon monoxide is associated with lower Parkinson’s disease risk.
The JAMA Neurology study, published September 8, enrolled more than 500,000 participants.
Never-smokers with exhaled carbon monoxide of 3 ppm or higher had about a 30% lower Parkinson’s risk.
Experts said the findings provide a biological clue, do not endorse smoking, and call for component testing.

1 / 2