Screening for cancer has been advocated as a means to reduce the associated morbidity and mortality. However, the frequency of the screening visits should be optimized. In 2,485 patients with gastric adenocarcinoma in Korea, researchers assessed the interval between the last screening endoscopy and the endoscopy at which the gastric cancer was diagnosed. Unsurprisingly, there was a direct correlation between the time between the last screening and diagnosis scans and the stage of the cancer at diagnosis. However, endoscopy intervals of 3 years or less showed similar benefits, implying that for average-risk individuals, an interval of 3 years would be sufficient.