Colorblindness Linked to Higher Bladder Cancer Mortality, Study Finds
A Stanford-led analysis of electronic health records found colorblind individuals diagnosed with bladder cancer had a 52% higher risk of death over 20 years compared with non-colorblind patients, possibly because they don’t notice blood in urine—the key early sign—while no mortality difference was observed for colorectal cancer. The authors stress this is hypothesis-generating and call for further research and awareness about diagnostic cues and potential screening considerations for color vision deficiency.