Workplace lubricant exposure linked to higher odds of MS in new study

Researchers also found a stronger association among current smokers

Written by Michela Luciano, PhD | Nov. 9, 2026

• Occupational exposure to petroleum-based lubricants was associated with 38% higher odds of multiple sclerosis (MS) in a Swedish study.
• The association was stronger among current smokers and people with certain genetic risk factors.
• More research is needed to confirm the findings and better understand how the timing and amount of workplace exposure may affect MS risk.

Workplace exposure to petroleum-based lubricants is linked to higher odds of multiple sclerosis (MS), a new study in Sweden suggests. The association was particularly strong among current smokers and people with certain genetic risk factors.

Researchers found that people who reported working with products such as engine oil, concrete form oil, and cutting fluids used to cool or lubricate metal had 38% higher odds of MS than those who did not. The odds also increased with longer exposure.

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