What are the potential risks associated with secondhand smoke exposure?
A meta-analysis of the association between secondhand smoke exposure and stroke found that secondhand smoke exposure was associated with an increased risk of stroke, with a pooled relative risk of 1.62 (95% CI, 1.21-2.17). Additionally, a study of healthy young adults found that passive smoking can lead to increased constriction of coronary vessels, suggesting an increased risk of heart disease. These findings suggest that secondhand smoke exposure is associated with an increased risk of stroke and heart disease.