Risk of developing rheumatoid arthritis doubled by polycyclic aromatic hydrocarbons exposure

Exposure to polycyclic aromatic hydrocarbons (PAHs), which form during combustion, could significantly increase an individual’s risk of developing rheumatoid arthritis (RA), regardless of whether they smoke or not. The authors said the findings confirmed, and expanded on, the limited evidence for the relationship between PAHs and RA.

PAHs are a class of ubiquitous chemicals formed when coal, oil, gas and wood are burnt or through the grilling of meat. Tobacco is also a known source of PAHs.