There are many clinical causes of depression. Some people suffer from depression because of bad experiences in childhood, while others suffer from depression because of unhappy life or career, etc. What are the common causes of depression? What are the common causes of depression? Generally, the common causes of depression are: 1. Psychological factors: major sudden negative life events that last for a long time have an adverse effect on the individual or even a malignant stimulus, leading to the occurrence of depression constitutes an important influence. Major negative life events, such as the death of a loved one or the loss of a relationship, are direct causes of depression. 2, genetic factors: the causes of depression are closely related to genetic qualities. Family history studies have found that the rate of homozygosity among their relatives is much higher than that of the general population, and the closer the blood relationship, the higher the incidence. 3, childhood experience: adverse childhood experiences, often constitute an important risk factor for depression in adulthood. 4, personality factors: personality traits with more obvious anxiety, obsessive-compulsive, impulsive and other traits of individuals prone to depression, is also a common cause of depression. 5, social factors: unfavorable social factors have an important impact on the causes of depression, unsatisfactory marital status is an important risk factor for the occurrence of depression, the main members of low-income families are prone to depression. 6, environmental factors: Among the environmental factors closely related to the causes of depression is the lack of sunlight. The causes of seasonal depression are mainly related to short daylight hours, lack of sunlight and endocrine changes in the human body when the weather becomes cold in winter. The above explanation is the common causes of depression, and I hope it will be helpful to you. These causes of depression are relatively common, and we should actively prevent depression according to these causes to maintain a healthy psychology and reduce the chance of depression.