From Scientific American:
A difficult childhood reduces life expectancy by 20 years among adults who experienced six or more particular types of abuse or household dysfunction as kids, while those who suffered fewer types of trauma lost fewer years of life, a large-scale epidemiological study finds.
The study, published this week in the American Journal of Preventive Medicine, reports that participants who were exposed to six or more different types of adverse childhood events (ACEs), such as physical or sexual abuse, were also 54 percent more likely to die during the 10-year period of the study. On the other hand, people who reported fewer than six ACEs did not have a statistically increased risk of death compared with the control group (those reporting no adverse childhood events). Still, those with one to five ACEs who did pass away during the study period were on average three to 5.4 years younger than those who died in the control group.
“As far as we know, this is the first cohort study to examine the association between ACEs and mortality,” wrote David Brown, an epidemiologist at the U.S. Centers for Disease Control and Prevention (CDC) and lead author of the study.