Depression, in psychology, a mood or emotional state that is marked by feelings of low self-worth or guilt and a reduced ability to enjoy life.
What is a simple definition of depression?
Depression is a mood disorder that causes a persistent feeling of sadness and loss of interest. Also called major depressive disorder or clinical depression, it affects how you feel, think and behave and can lead to a variety of emotional and physical problems.
What are 4 major causes of depression?
What Are the Main Causes of Depression?
- Abuse. Past physical, sexual, or emotional abuse can increase the vulnerability to clinical depression later in life.
- Certain medications. …
- Conflict. …
- Death or a loss. …
- Genetics. …
- Major events. …
- Other personal problems. …
- Serious illnesses.
What is the heritability of depression?
That is the case for major depression. Heritability is probably 40-50%, and might be higher for severe depression. This could mean that in most cases of depression, around 50% of the cause is genetic, and around 50% is unrelated to genes (psychological or physical factors).
What is the underlying cause of depression?
Research suggests that depression doesn’t spring from simply having too much or too little of certain brain chemicals. Rather, there are many possible causes of depression, including faulty mood regulation by the brain, genetic vulnerability, stressful life events, medications, and medical problems.
What are the two types of depression?
Six common depression types
- Major depression. The classic depression type, major depression is a state where a dark mood is all-consuming and one loses interest in activities, even ones that are usually pleasurable. …
- Persistent depressive disorder. …
- Bipolar disorder. …
- Seasonal affective disorder (SAD). …
Can depression change your personality?
Conclusions: The findings suggest that self-reported personality traits do not change after a typical episode of major depression. Future studies are needed to determine whether such change occurs following more severe, chronic, or recurrent episodes of depression.
What depression does to your brain?
An enlarged and hyperactive amygdala, along with abnormal activity in other parts of the brain, can result in disturbances in sleep and activity patterns. It can also cause the body to release irregular amounts of hormones and other chemicals in the body, leading to further complications.
Can u inherit depression?
Depression is known to run in families, suggesting that genetic factors contribute to the risk of developing this disease. However, research into the genetics of depression is in its early stages, and very little is known for certain about the genetic basis of the disease.
What happens in a depression?
Key Takeaways. An economic depression is an extremely severe, long-term contraction in economic activity. In a depression, GDP annual falls more than 5% and unemployment is in the double digits. The 10-year Great Depression was the world’s only depression.
What is the heritability of anxiety?
GAD is a heritable condition with a moderate genetic risk (heritability of approximately 30%).
What genes are associated with depression?
The serotonin transporter gene and genes involved in the serotonergic system are candidate genes for susceptibility to depression given that many antidepressant medications act on these systems. Several studies have implicated the serotonin transporter gene (SLC6A4) in MDD [17–19].
Can you be born with anxiety?
Some children are simply born more anxious and less able to cope with stress than others. Children can also pick up anxious behaviour from being around anxious people. Some children develop anxiety after stressful events, such as: frequently moving house or school.
Can depression make you gassy?
People with depression may have frequent stomach problems, such as nausea, bloating, diarrhea, or constipation. One possible explanation for these symptoms involves a neurotransmitter in the brain and gut called serotonin.
Is anxiety a mental illness?
When anxiety interferes with daily activities, you may have an anxiety disorder. Anxiety disorders are real, serious medical conditions – just as real and serious as physical disorders such as heart disease or diabetes. Anxiety disorders are the most common and pervasive mental disorders in the United States.
How does depression affect the synapse?
Basic and clinical studies demonstrate that depression is associated with reduced size of brain regions that regulate mood and cognition, including the prefrontal cortex and the hippocampus, and decreased neuronal synapses in these areas.