Researchers Naomi Mandel from Arizona State University and Dirk Smeesters from Erasmus University Rotterdam in the Netherlands conducted several experiments in Europe and the United States where participants wrote essays on their feelings about their own deaths.
They then checked off items on a grocery list or ate cookies. Consumers who wrote about their own deaths wanted to buy more and ate more than those who wrote about a painful medical procedure .
"When people are reminded of their inevitable mortality, they may start to feel uncomfortable about what they have done with their lives and whether they have made a significant mark on the universe. This is a state called "heightened self-awareness,"" they said.
They found people with low self-esteem, in particular, tend to over-consume after death-related thoughts.
The study also revealed that placing a mirror in front of the participants reduced the desire to over-consume.