#SecondhandSmoke

A sharp rise in lung cancer diagnoses among nonsmokers is changing the landscape of cancer research and prompting urgent questions about why this historically rare occurrence is now alarmingly common. Recent headlines underscore both a surge in cases and the mysteries that still shroud this deadly disease, with many lung cancers in nonsmokers having no obvious cause and frequently discovered by chance The New York Times.

While lung cancer has long been synonymous with tobacco use, a significant share of new patients are now individuals who have never smoked. The transformation is confounding both clinicians and the public, making it an important concern for readers in Thailand as well as globally.