Isaac Adler (c. 1849–1918) was an American physician known for his published descriptions of lung cancer cases in the early 20th century.
In 1892, Adler was appointed professor of clinical psychology at the New York Polyclinic Medical School.
[1] In 1912, Adler published the work for which he is best known, "Primary Malignant Growths of the Lungs and Bronchi".
In the first review of lung cancer, previously a rare disease, Adler listed 374 known cases from various European registries.
[3] Adler noted "a decided increase" in lung cancer, and speculated that tobacco or alcohol could be involved.