January 2018 marks the 25th anniversary of the landmark EPA health assessment, Respiratory Health Effects of Passive Smoking: Lung Cancer and Other Disorders. The asessment concluded that tobacco smoke not only presents risks to the health of smokers but also to those around them. The science underpinning the assessment provided health officials and others the evidence needed to act in protecting people from exposure to secondhand smoke. The assessment's impact has been far-reaching and has led to healthier air, particulary indoor air, for millions of people.You may need a PDF reader to view some of the files on this page. See EPA’s About PDF page to learn more.
Reducing Exposure to Secondhand Smoke: US Progress Since EPA's 1993 Report (PDF)(4 pp, 486 K,
An overview of progress in reducing exposure to secondhand smoke in the 25 years since the 1993 landmark report
Respiratory Health Effects of Passive Smoking (PDF)(525 pp, 4 MB)
EPA's 1993 landmark report on the health effects of secondhand smoke.