Depression can start off several different ways but usually depression starts off when someone is stressed out or is even stuck in a bad situation and cannot change it.
The depression doesn't spring from simply having too much or too little of certain brain chemicals.
Rather, there are many possible causes of depression, including faulty mood regulation by the brain, genetic vulnerability, stressful life events, medications, and medical problems.
There's no single cause of depression.
It can occur for a variety of reasons and it has many different triggers.
For some people, an upsetting or stressful life event, such as bereavement, divorce, illness, redundancy and job or money worries, can be the cause.
Different causes can often combine to trigger depression.
You can be born depressed as it's possible to be depressed if your parents are depressed.
You're more likely to be depressed and suffer from depression if your parents or at least one of your parents is depressed.
However no matter what someone says everyone does get depressed at some point in their lives so in reality everyone is born with depression.
However some people are less depressed than other people while some people suffer from depression more severely.
Scientists believe that as many as 40 percent of those with depression can trace it to a genetic link.
Environmental and other factors may make up the other 60 percent.
There's no single cause of depression. It can occur for a variety of reasons and it has many different triggers.
For some people, an upsetting or stressful life event, such as bereavement, divorce, illness, redundancy and job or money worries, can be the cause.
Different causes can often combine to trigger depression.
Women are nearly twice as likely as men to be diagnosed with depression.
Depression can occur at any age.
Some mood changes and depressed feelings occur with normal hormonal changes.