The American Thoracic Society improves global health by advancing research, patient care, and public health in pulmonary disease, critical illness, and sleep disorders.

The American Thoracic Society improves global health by advancing research, patient care, and public health in pulmonary disease, critical illness, and sleep disorders. Founded in 1905 to combat TB, the ATS has grown to tackle asthma, COPD, lung cancer, sepsis, acute respiratory distress, and sleep apnea, among other diseases.

American Thoracic Society (ATS) Official Clinical Practice Guidelines (CPGs) make recommendations for patient care that are informed by systematic reviews and then formulated and graded using the Grading of Recommendations, Assessment, Development, and Evaluation (GRADE) approach.

The American Thoracic Society is the world's leading medical society dedicated to accelerating the advancement of global respiratory health through multidisciplinary collaboration, education, and advocacy.

Founded in 1905, the American Thoracic Society is the world’s leading medical society dedicated to accelerating the advancement of global respiratory health through multidisciplinary collaboration, education, and advocacy.

The ATS International Conference is the home of pulmonary, critical care, and sleep professionals, from those in the earliest stages of their careers to those whose research or strides in clinical care has gained them international recognition.

Award cycles for the ATS Research Program unrestricted, diversity, and partner grants have recently been updated to align with the calendar year. Please review the timeline below for further details. Applicants to 2024-2025 grants will be notified of award decisions in March 2025.

The ATS Fellow designation is a mark of distinction, conferring recognition on members for their accomplishments, dedication and contributions to the Society as well as to the fields of pulmonary, critical care, and sleep medicine.

Founded in 1905, the American Thoracic Society is the world’s leading medical society dedicated to accelerating the advancement of global respiratory health through multidisciplinary collaboration, education, and advocacy.

Founded in 1905, the American Thoracic Society is the world’s leading medical society dedicated to accelerating the advancement of global respiratory health through multidisciplinary collaboration, education, and advocacy.