Five-second finger test that can tell if you've got CANCER. READ MORE: Mystery rise of lung cancer in young people who NEVER smoked By EMILY JOSHU HEALTH REPORTER FOR DAILYMAIL.COM. Published: 13: ...

A simple, five-second finger test could be an early warning sign for lung cancer, experts say. Known as the "Schamroth window test," it involves pressing your thumbnails together and looking for a ...

This quick finger test can reveal if you’re at greater risk for lung disease By . McKenzie Beard. Published May 6, 2025, 12:53 p.m. ET. Double-jointed? It’s not just a fun party trick.