The susceptibility for depressive episodes (and suicidal tendencies) is probably the result of other more beneficial "features" rather than evolutional neglect.

The susceptibility for depressive episodes (and suicidal tendencies) is probably the result of other more beneficial "features" rather than evolutional neglect. For example when you have a serious infection, especially with fever, the immune systems triggers quite a few mental symptoms similar to depression, in an attempt to conserve energy, lessen the impact of the infection and maybe even limit your ability to infect others.