Länk - Mild depression kan vara ett sätt att signalera att ett mål år ouppnåeligt, dags att refokusera
Mild depressive symptoms can therefore be seen as a natural part of dealing with failure in young adulthood. They set in when a goal is identified as unreachable and lead to a decline in motivation. In this period of low motivation, energy is saved and new goals can be found. If this mechanism does not function properly, though, severe depression can be the consequence.
Läs mer: The evolutionary origin of depression: Mild and bitter | The Economist