Depression is a mental illness that is linked to physical changes
that occur in the brain. Depression results from an imbalance
of certain chemicals, called neurotransmitters, which are responsible
for carrying signals in the brain and nerves. While there is no
single cause of depression, there are many common factors that
can lead to depression. Such factors as: family history, physical
conditions, trauma/stress, and other psychological disorders.
Family History- Depression is one of many illnesses that can
be passed on to individuals within a family for generations
as a result of genetics. Genetics are responsible for all physical
and biological traits, and are always inherited from one’s
parents.
Physical Conditions- Depression can result from the weakness
and stress caused by serious medical conditions like cancer, HIV,
or heart disease. Depression can actually increase the severity
of such physical conditions, for it weakens the immune system
and can make pain harder to tolerate.
Trauma/Stress- Traumatic or stressful experiences can drastically
increase ones likelihood of becoming depressed. Changing schools,
starting a new job, or dealing with the death of a family member
are all extreme changes in ones life that can lead to depression.
Psychological Disorders- When one suffers from other psychological
disorders such as anxiety, eating disorders, or substance abuse,
depression can arise if these disorders go untreated, as a result
of the stress that occurs from living with the illness.