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Depression affects a large population of India.(Shutterstock)

Are you depressed? Your faulty immune system could be the cause, say scientists

WT24 Desk

Depression, thought to be a mental health concern, is often not taken seriously enough,PTI reports. Scientists now say that it is a physical illness caused by a faulty immune system that may be treated using anti-inflammatory drugs. Current treatments for depression focus on restoring serotonin and other mood-boosting chemicals in the brain. However, researchers from the University of Cambridge in the UK have found that an overactive immune system triggers inflammation throughout the entire body, sparking feelings of hopelessness, unhappiness and fatigue. In India, 65% youngsters show signs of early depression.

It may be a symptom of the immune system failing to switch off after a trauma or illness, and is a similar to the low mood people often experienced when they are fighting a virus, like flu. Recent studies and clinical trials have shown that treating inflammation seems to alleviate depression, researchers said. “It is pretty clear that inflammation can cause depression,” said Ed Bullmore, professor at University of Cambridge.

“In relation to mood, beyond reasonable doubt, there is a very robust association between inflammation and depressive symptoms,” Bullmore was quoted as saying by The Telegraph. Scientists at Cambridge and the Wellcome Trust are hoping to begin trials next year to test whether anti-inflammatory drugs could switch off depression.

The immune system triggers an inflammatory response when it feels it is under threat, sparking wide-ranging changes in the body such as increasing red blood cells, in anticipation that it may need to heal a wound soon. Scientists believe that associated depression may have brought an evolutionary benefit to our ancestors. If an ill or wounded tribal member became depressed and withdrawn, it would prevent a disease being passed on.

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