 Adverse childhood experiences, ACEs, are events that occur before the age of 18 and can have long-term negative consequences on health and well-being. This study found that people who experienced multiple ACEs had higher rates of various health problems including substance abuse, sexual risk taking, mental ill health, and problematic drug use. These results suggest that multiple ACEs should be taken into account when assessing an individual's overall health and well-being. This article was authored by Professor Karen Hughes, Ph.D., Professor Mark A. Bellies, DSC, Catherine A. Hardcussell, Master of Science, and others.