Depression Causes.

Genetic predisposition There is strong growing evidence that genes can be a risk factor for developing depression therefore increasing the likelihood that severe environmental stresses may precipitate the onset of depression. Some personality traits, such as a propensity for high anxiety levels, may also be linked with genes.

Personality
There appears to be a link with certain personality characteristics and depression. According to Gordon Parker and The Black Dog Institute, a person who exhibits one or more of the following, may be more at risk of depression. experiences high levels of anxiety, is a ‘worrier’ or is irritable is self-critical or has low self-worth is hypersensitive is a perfectionist has a self focused style.

Traumatic events

The natural grief we feel at the death of a loved one, or the breakdown of a marriage or other relationship is a healthy reaction to a stressful life event, and sadness/anxiety in these circumstances may be normal. If the grief however is severe and continues beyond a reasonable time it may develop into clinical depression.

Medical conditions

If an illness or medical condition is life threatening, disabling or significantly affects lifestyle in a negative way, there is a possibility that depression may occur as a result of having to deal with it emotionally. However, there are also some illnesses that are known to cause depression such as some cancers. The hormonal changes that occur naturally throughout life are common igniters of anxiety or depression.

The hormonal changes at puberty, during pregnancy, childbirth and menopause may cause symptoms of depression. Illnesses that affect hormones such as Addison's disease and Cushing's disease can also trigger depression. Illnesses that are more likely to be associated with or who present with depression include: AIDS, rheumatoid arthritis, cancer, influenza, thyroid imbalance, Ross River fever, viral pneumonia, neurological disorders, multiple sclerosis, Parkinson's disease, sleep apnoea, and stroke.

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