Depression is caused by a combination of factors, such as the person's
genes, biochemical imbalance in the brain,
persona l stressful experiences and
psychological factors. Low levels or imbalance
of certain neurotransmitters cause depression.
There are several different kinds that are
involved such as serotonin, noradrenaline,
dopamine. Stressful life events such as a serious
loss, difficult relationship, financial problem can
also trigger a depressive episode by overwhelming a person's ability to
cope. Some depression runs in families and it is possible to inherit a
tendency to depression. Depression can also be the result of various
diseases. People suffering from an under active thyroid, anemia, heart
attack, stroke, cancer or diabetes may be a higher risk for depression. This
can be caused from the stress of the illness or the illness itself. Some
prescription medicines can increase the risk of getting depressed. Eating
habits, sleep patterns and lack of exercise may contribute to depression
tendencies as well