A rocky childhood.
A car accident.
If these are in your past, they could be affecting your present health.
These are all examples of traumatic events — which, in psychological terms, are incidents that make you believe you are in danger of being seriously injured or losing your life.
Research shows that these events can trigger emotional and even physical reactions that can make you more prone to a number of different health conditions, including heart attack, stroke, obesity, diabetes, and cancer.
Harvard T.H. Chan School of Public Health