Resilience: A silver lining to experiencing adverse life events?

When adverse life events occur, people often suffer negative consequences for their mental health and well-being. More adversity has been associated with worse outcomes, implying that the absence of life adversity should be optimal. However, some theory and empirical evidence suggest that the experience of facing difficulties can also promote benefits in the form of greater propensity for resilience when dealing with subsequent stressful situations. I review research that demonstrates U-shaped relationships between lifetime adversity exposure and mental health and well-being, functional impairment and health care utilization in chronic back pain, and responses to experimentally induced pain. Specifically, a history of some lifetime adversity predicts better outcomes than not only a history of high adversity but also a history of no adversity. This has important implications for understanding resilience, suggesting that adversity can have benefits.