Some people are born with lower levels of Seratonin, which is the chemical believed to stimulate feelings of well being in human beings. People with lower levels of Seratonin are more prone to depressive episodes.
Depression can have such organic causes as infections if the brain becomes involved, but no there is nomicroorganism that causes depression.
If anxiety and depression are correlated, there are three possible directions of causality. These are anxiety causes depression, depression causes anxiety, and there is an environmental stimuli that causes both anxiety and depression.
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That people who have mental illness are all crazy.
There are several possible causes of chronic depression. Some of these causes include traumatic events, certain medications and substances, age (older individuals are more likely to suffer from depression), and genetics (depression can run in a family).
There are many causes for depression. I suggest talking to a counseler.
It Is Written - 1956 Depression and Its Causes was released on: USA: 6 November 2011
You can find articles and information about the causes of depression at the WebMD website. Once on the page, type "Causes of Depression" into the search field at the top of the page and press enter to bring up the information.
depression of the mouth
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Mood changes and depressive illnesses are more common in people suffering from physical illnesses, than in people who are well.Although a person can develop depression in association with almost any physical illness, some diseases are more likely to lead to depression than others.Depression in these conditions can be expected to respond to the same treatments as any other depressive illness - and so help should be sought and treatment given for the depression, irrespective of its cause.Some physical illnesses, particularly heart disease and other conditions that affect the blood supply, are more likely to occur in people with depression.It's not simply that physical illnesses can lead to depression - the opposite occurs too. This makes the recognition and treatment of depression all the more urgent.
An undersupply of serotonin is most likely linked to depression.