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What Is Depression?

By Tai

By Tài AnhPublished 5 months ago 3 min read
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What Is Depression?
Photo by K. Mitch Hodge on Unsplash

Depression, the primary cause of disability worldwide, poses a significant challenge in terms of comprehension due to its nature as a mental illness. In the United States, nearly 10% of adults grapple with depression. However, unlike conditions such as high cholesterol, understanding depression proves to be much more complex. One of the main sources of confusion lies in distinguishing between experiencing temporary feelings of sadness and actually having depression. It is common for individuals to feel down occasionally, whether due to receiving a poor grade, losing employment, engaging in an argument, or even encountering a gloomy day. Sometimes, these feelings arise without any identifiable trigger. However, as circumstances change, these transient feelings of sadness tend to dissipate. On the other hand, clinical depression is distinct. It represents a medical disorder that persists for a minimum of two consecutive weeks and significantly hampers an individual's ability to function in various aspects of life, including work, leisure activities, and relationships.

Depression encompasses a wide range of symptoms that can significantly impact an individual's well-being. These symptoms include a persistent low mood, diminished interest in activities that were once enjoyable, alterations in appetite, feelings of worthlessness or excessive guilt, disrupted sleep patterns, difficulty concentrating, restlessness or slowness, decreased energy levels, and recurrent thoughts of suicide. According to psychiatric guidelines, experiencing at least five of these symptoms qualifies for a diagnosis of depression. It is important to note that depression not only affects behavior but also has physical manifestations within the brain. Observable changes, visible to the naked eye or through advanced imaging techniques like X-ray, include reduced frontal lobes and hippocampal volumes. On a microscopic level, depression is associated with various factors, such as abnormal transmission or depletion of certain neurotransmitters (particularly serotonin, norepinephrine, and dopamine), disrupted circadian rhythms, specific alterations in the REM and slow-wave phases of the sleep cycle, and hormone irregularities, including elevated cortisol levels and deregulation of thyroid hormones.

However, the exact causes of depression still remain elusive to neuroscientists. It appears to be a result of a intricate interplay between genetic factors and the environment, yet there is currently no diagnostic tool available that can accurately predict its onset or location. Furthermore, due to the intangible nature of depression symptoms, it becomes challenging to identify individuals who may appear fine but are actually struggling. According to the National Institute of Mental Health, it typically takes more than ten years for an individual suffering from a mental illness to seek help. Nevertheless, there exist highly effective treatments for depression. Medications and therapy work in tandem to enhance brain chemicals, while in severe cases, electroconvulsive therapy, which induces a controlled seizure in the patient's brain, has proven to be beneficial. Additionally, other promising treatments such as transcranial magnetic stimulation are currently under investigation.

If you are aware of someone who is facing depression, kindly encourage them in a gentle manner to explore these alternatives. You could even extend your support by assisting them with specific tasks such as researching therapists in their vicinity or compiling a list of questions to ask a doctor. For individuals battling depression, these initial steps may appear overwhelming. In case they experience feelings of guilt or shame, remind them that depression is a medical condition, similar to asthma or diabetes. It is not a sign of weakness or a personality trait, and they should not anticipate themselves to simply overcome it any more than they could will themselves to heal a broken arm.

If you have not personally experienced depression, it is important to refrain from comparing it to moments when you have felt down. Drawing parallels between their current experience and normal, fleeting feelings of sadness can induce feelings of guilt in those struggling with depression. Simply engaging in open discussions about depression can be beneficial. In fact, research indicates that inquiring about suicidal thoughts can actually decrease the risk of suicide. By fostering open conversations about mental illness, we can gradually diminish the associated stigma and create an environment where individuals feel more comfortable seeking help. As more patients actively pursue treatment, scientists will gain a deeper understanding of depression, leading to advancements in treatment options.

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