Answer:
The causes are complex. It may be a combination of changes in circumstance, changes in the chemical balance of the brain cells, and genetic factors may also be involved.
Some types of depression run in families.
However, there are many other factors that can be involved, such as a stressful environment, low self-esteem, stress, bereavement, chronic illness, difficult relationships, financial problems or any unwelcome change in your life pattern.
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