Depression Might Be a Biological Survival Strategy - Deepstash
Depression Might Be a Biological Survival Strategy

Depression Might Be a Biological Survival Strategy

More and more researchers across specialties are questioning our current definitions of depression. Biological anthropologists have argued that depression is an adaptive response to adversity and not a mental disorder.

According to the Polyvagal Theory of the autonomic nervous system, depression is part of a biological defense strategy meant to help us survive. This biological strategy is called immobilization, and it manifests in the mind and the body with a set of symptoms we call depression.



MORE IDEAS FROM We’ve Got Depression All Wrong. It’s Trying to Save Us.

Depression Starts with Immobilization

Our autonomic nervous system is constantly scanning our internal and external environment for signs of danger. If it detects a threat, its next strategy is the fight or flight response which we often feel as anxiety.

Sometimes the threat is so bad or goes on for so long, that the nervous system decides there is no way to fight or to flee. At that point, the nervous system goes into immobilization and turns down the metabolism to a resting state. That’s depression!



If depression is the emotional expression of the immobilization response, then the solution is to move out of that state of defense, But how?

Removing the threat is not enough to move out of that state of defense. Rather, the nervous system has to detect robust signals of safety to bring the social state back online. The best way to do that is through social connection.



Ways In Which Immobilization Helps

The Immobilization response is a key part of the biological defense:

  • It dulls pain and makes us feel disconnected. People often describe feeling "out of their bodies" during traumatic events, which has a defensive effect of cushioning the emotional shock.
  • It has a metabolic effect, slowing the metabolism and switching the body to ketosis. Some doctors speculate that this metabolic state could help healing in severe illness.



When people who are depressed learn that they are not damaged, but have a good biological system that is trying to help them survive, they begin to see themselves differently. After all, depression is notorious for the feelings of hopelessness and helplessness. But if depression is an active defense strategy, people may recognize they are not quite so helpless as they thought.

It is time we start valuing the incredible capacity of our biology to find a way in hard times. 



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Understanding The Stress Response

A stressful situation — whether something environmental, or psychological, can trigger a cascade of stress hormones that produce well-orchestrated physiological changes.

This combination of reactions to stress is also known as the "fight-or-flight" response because it evolved as a survival mechanism, enabling people to react quickly to life-threatening situations. The carefully orchestrated sequence of hormonal changes and physiological responses helps someone to fight the threat off or flee to safety. Unfortunately, the body can also overreact to stressors that are not life-threatening.




Experiencing Panic Attacks
  • Around 15 to 30 percent of us experience a panic attack at least once in our lives, which is essentially our body’s emergency response system.
  • Symptoms include more blood being pumped into our muscles, narrow vision, faster breaths and auto-shutting of the digestive system.
  • Side-effects may include sweating and dizziness, and the commotion usually lasts a few minutes.
  • The body is now primed for a ‘fight or flight’ response, and if there is a real danger, a panic attack can be life-saving.




Stressful Situations And Our Response

Our natural tendency when confronted is to be defensive, and it is often hard to keep cool during a stressful situation.

The Polyvagal Theory, based on new research in neuroscience offers some insights on this automatic ‘fight-or-flight’ self-regulation done by us during moments of anxiety, pressure and stress. Specific tactics in the theory help us provide a better response which involves creativity, collaboration and thriving.