38 2021 Sustainability Report We have the opportunity to address today’s challenges through the impact of our work acr oss UnitedHealth Group and our mission to help people live healthier lives and help mak e the health system work better for everyone — not just for the 147 million people our compan y serves, but for anyone who interacts with the health care system. Introduction Our People and Culture Environmental Health A Modern, High-Performing Health System Responsible Business Practices Performance Data