What is the cause of depression? Physiological or psychological?

Many of us suffer from depression in varying degrees, but there is a question at the table: What is the cause of depression?
Is it a physiological disorder related to certain neurotransmitters in the body, such as serotonin, or is it a purely psychological problem? In general, any abnormalities such as serotonin and dopamine can cause depression.

But hey, says Joseph Coyle of Harvard Medical School about the reference to the diagnosis of the disease because of a chemical imbalance in these vectors. "That's old thinking and the truth is that the subject is much more complicated!"

According to a 2007 survey conducted by Christopher M. France, a psychologist at the Cleveland State University, the cause of depression was as follows: 87.8% of those surveyed believed that any abnormalities in these vectors might result ; In fact a defect in the proportions of these substances within the body, whether increase or decrease does not necessarily lead to the emergence of symptoms of depression!

According to another study conducted in 2009 at the University of California, Los Angeles, we found the following results: A third of people with depression and antidepressants showed no improvement; She is still suffering from depression. Antidepressants are supposed to contribute to eliminating it for all or most of the sufferers.

Scientists have found that some regions of the brain are smaller than those in normal people such as the Amygdala region, called the cerebral isola, which is responsible for feeling scared. Anxiety.

Brain imaging studies have also shown that certain areas become less active if a person is depressed, such as the amygdala and the hypothalamus, but even if these contractions affect depression, the subject is still incomprehensible and needs further studies!

Other results have shown that mood or psychological conditions have a major impact on depression such as stress of life; you lose someone dear to you; or fail in the goal you are planning. The idea of psychological stress is that it causes an increase in the secretion of cortisol. Cortisol, which causes long-term secretion of contractions in a region of the brain called Hippocampus, where over time may lead to depression , yet scientists are still trying to establish a relationship between depression and small size Brain!

In general, the cause of depression can not be reduced in the absence of a specific substance in the body or because of human stress because it is narrow and limited. There is a famous story called the elephant and the blind when asked a group of blind to describe the villa from the touch and each one of them to record his observations of the image he imagined in his mind, there was a difference of opinion and held each of them a description of a particular of his observations, One end! This is exactly what happens with depression. When we want to study it, we must look at it from all sides and try to find a link between them, starting from the smallest particles in your body and even the world in which you live.