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Colorblindness Linked to Higher Bladder Cancer Mortality Risk

2/10/2026

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Summary

Story summary

Researchers at Stanford Medicine report that colorblindness, which affects about 8% of men, may raise mortality risk for bladder cancer patients.
The study estimates colorblind men have a 52% higher mortality rate over 20 years.
Difficulties recognizing blood in urine contribute to delayed diagnosis and poorer outcomes.
Experts urge colorblind patients to inform doctors and seek urine tests if changes occur.

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Story summary

Researchers at Stanford Medicine report that colorblindness, which affects about 8% of men, may raise mortality risk for bladder cancer patients.
The study estimates colorblind men have a 52% higher mortality rate over 20 years.
Difficulties recognizing blood in urine contribute to delayed diagnosis and poorer outcomes.
Experts urge colorblind patients to inform doctors and seek urine tests if changes occur.