Heavy secondhand smoke exposure tied to higher risk for severe headaches or migraine

Key clinical point: Heavy secondhand smoke (SHS) exposure was positively associated with a higher risk for severe headaches or migraine in adults who never smoked.

Major finding: Heavy SHS exposure (serum cotinine level 1-10 ng/mL) was positively associated with severe headaches or migraine (adjusted odds ratio 2.02; P = .011). No significant association was observed between low SHS exposure (serum cotinine level 0.05-0.99 ng/mL) and headaches or migraine (P = .226).

Study details: This nationwide cross-sectional study included 4560 adults who had never smoked, of which 20% had severe headaches or migraine.

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Disclosures: This study did not receive any funding from external sources. The authors declared no conflicts of interest.

Source: Wu J, Yang P, et al. Association between secondhand smoke exposure and severe headaches or migraine in never-smoking adults. Headache. 2023 (Nov 8). doi: 10.1111/head.14640