For most people with bladder cancer, the first red flag is literally red: blood in the urine. But for people with color blindness, that warning sign may be easy to miss — and missing it could prove ...

For many people, spotting blood in the urine is often the first warning sign of bladder cancer. But for those with color vision deficiency, commonly called colorblindness, that signal can easily go ...

Color-blind patients may miss blood in urine, bladder cancer’s earliest symptom Missed visual warning signs are linked to delayed diagnosis and higher mortality Awareness and routine urine testing ...