One of the most common forms of self-medication in capitalist societies surely has to be retail therapy.  Is there really a problem that can't be solved by a new pair of shoes, or the latest iWhatever?  Interestingly, one of the problems people might be trying to overcome is the fear of death.

The insecurity and anxiety caused by the fear of death has some interesting effects on people.  When people are reminded of their inevitable demise, they become more rooted in their outlook on life, this is called Terror Management Theory.  For example, we start to see people with similar values and beliefs more positively, and people with different beliefs more negatively than we ordinarily would (1).  We also become more reluctant to use cultural symbols like flags in improper ways (2).