Enrollment will open again on May 6, 2024! Our Research Research is at the heart of the American Cancer Society’s mission. We have invested more than $5 billion in research since 1946, all to find: The causes of cancer Ways to detect the disease earlier More effective treatments Ways to help people thrive during and after treatment ACS Research Highlights Learn how the discoveries of our ACS staff researchers and research grantees are moving us closer to a world without cancer. Population Science Research Learn how our department conducts innovative research focused on understanding cancer risk factors and how to improve the quality of life and survival of people diagnosed with cancer. Cancer Prevention Studies Learn more about how our long-term studies have contributed to a 30% decline in cancer deaths between 1991 and 2017.