Bias and Fairness in Healthcare AI — Sources, Impacts, and Mitigation Strategies
OVERVIEWContent
Bias and fairness in healthcare AI remain central concerns as AI systems are deployed at scale across diverse patient populations. The World Economic Forum has argued that the real test for AI in healthcare is making care more human — a framing that implicitly recognizes that AI systems risk dehumanizing care if they optimize for efficiency metrics that embed historical biases.
Sources of bias in healthcare AI include training data that underrepresents minority populations, clinical labels that reflect historical diagnostic disparities, and outcome metrics that conflate access to care with health status. These biases can compound in AI systems, potentially widening rather than narrowing existing health disparities if not actively mitigated.
Mitigation strategies include diverse and representative training data curation, bias auditing at model development and post-deployment stages, fairness constraints in model optimization, and ongoing monitoring of AI performance across demographic subgroups. The UN agencies' joint strategic guidelines for AI in health explicitly address equity as a core governance requirement, recognizing that AI health innovations must not exacerbate disparities between high- and low-resource settings (see un-agencies-ai-health-guidelines).