Imagine someone who never feels down, pays no attention to fatigue, and moves on after every failure. They might seem unstoppable. But would we really be better off getting rid of the processes that lower our mood and motivation altogether?
To think this through, it helps to distinguish between being able to stop pursuing something and being unable to function because of depression. There is value in being able to call off an attempt that is getting nowhere. But explaining all the suffering of depression as “the body making us rest, just as it should” risks romanticizing a condition that calls for help.
What makes the idea of staying energetic forever interesting is the question of what happens when all we have left is an accelerator. Let’s start with a place where there is no food.
When does persistence at an empty feeding site become a liability?
Suppose an animal is searching a place where it found food yesterday. Today, it finds nothing. Perhaps a little more searching will turn something up. Or perhaps it would be better to move somewhere else.
The longer it searches, the more energy it uses and the more time it loses that it could have spent trying another place. If yesterday’s success keeps it in the same spot, persistence can backfire. Being able to scale back an activity or stop for a while creates more options.
That alone, however, does not justify saying that “the ability to feel down evolved to help animals cut their losses when searching for food.” All this example shows is that there are situations in which it is better not to keep doing something. Explaining the origins of depressed mood in humans would require further evidence.
The “brakes” metaphor is useful for recognizing that stopping can serve a purpose, too. Using it to conclude that every form of distress is a purposeful response takes the argument too far.
When a cold leaves you with no desire to have fun, how are the body and brain connected?
The fatigue that comes with an infection is one example of how our physical state can change our behavior. An outing we would normally look forward to can feel like too much effort, and our appetite or desire to see other people may change.
These changes are known as “sickness behavior.” A review by Dantzer and colleagues describes how inflammatory signals released by immune cells in response to infection act on the brain and change behavior. Understanding this as communication between the body and brain is closer to what is happening than dismissing it as a matter of willpower.[1]
This offers a biological clue to understanding reduced activity. Still, although the temporary fatigue of a cold and depression can share some symptoms, they cannot be treated as the same thing. The same review also examines a more complex relationship: under conditions of persistent inflammation, susceptible people may develop depressive symptoms.[1]
Several different pathways can lead to outcomes that look alike. A single snapshot of someone “being less active” cannot tell us whether they are recovering or experiencing an ongoing problem.
“Rest will get you back to normal” is an assumption hidden in the brakes metaphor
On a bicycle, squeezing the brakes slows you down, and releasing them lets you pedal again. This simple mechanism makes it easy to imagine that the mind works the same way.
But mood and motivation cannot be restored with a lever within reach. A deadline passes, but your mood does not lift. You take time off, but enjoyment does not return. You no longer have the energy even to send necessary messages or make calls. In these circumstances, “once you’ve stopped properly, just get moving again” ceases to be a helpful explanation.
The National Institute of Mental Health (NIMH) describes depression as an illness that affects mood, thinking, sleep, eating, work, and other aspects of life. Diagnosing major depression involves checking, among other things, whether symptoms that include depressed mood or a loss of interest or pleasure have been present nearly every day for at least two weeks.[2] This is not a countdown for self-diagnosis. It is one part of the criteria used to assess a person’s condition in a clinical consultation.
Being able to change what you are doing is different from finding even necessary activities difficult. Keeping that distinction in view helps prevent “stopping matters” from sliding into “it is fine to stay as you are, even if you are suffering.”
Why does your mind keep working when you want to rest?
Your body may be inactive while your mind keeps replaying the same failure. This, too, is hard to fit into a simple explanation about “saving energy.”
Take an email you have not managed to answer. If the thought ends with “I’ll reply tomorrow,” it may lead to a next step. But sometimes unverified assumptions just keep multiplying: “I failed to reply again,” “They must be angry,” “I’m always like this.” You spend a long time thinking, yet still cannot settle on a first sentence.
The issue here is not just how much effort you are making. It is whether that thinking leads to a concrete choice or to help from someone else. More time spent worrying does not necessarily bring a solution closer.
“The body has decided to cut its losses” is not an all-purpose explanation here, either. The person may not be able to choose what to step away from, and stopping may not resolve the problem. Before reaching for a metaphor, we need to look at what is happening to that person and what burdens remain.
Deadlines do not wait for us to recover
Even when we understand the value of rest, taking time off can be difficult. There is no one to cover a shift. Caregiving and housework continue. Cutting back on work raises worries about income. Some circumstances cannot be changed simply by saying, “Change your environment.”
Here, looking at practical arrangements in daily life can get us further than focusing only on how an individual’s mind is designed. Who could you talk to about this week’s deadline? Could you share one particularly demanding task with someone? If you are considering medical care but making the appointment call feels too difficult, is there someone who could help you work through the steps?
These are not substitutes for treatment. They are examples of turning the overwhelming task of “changing everything on your own” into smaller conversations about getting help. Treatments for depression include psychotherapy and medication; the choice can be discussed with a health professional in light of the person’s symptoms and circumstances.[2]
If distress persists, your ability to enjoy things does not return, or daily life is being affected, it is okay to seek help from a healthcare provider or another appropriate service rather than keep trying to reassure yourself with a metaphor. You do not have to wait until two weeks have passed.
Rather than aiming to be invincible, find more ways to stop and start again
Would removing the ability to feel down make us invincible? The answer is that being able to keep going without stopping is not, by itself, enough to live well. There certainly are situations in which stopping opens up the next choice, just as leaving an empty feeding site does.
At the same time, this gives us no basis for declaring depression a clever survival brake. Recovering through rest, getting help to reduce a burden, and receiving treatment cannot all be captured by a single word.
What is worth taking from the brakes metaphor is not the reassurance that every difficulty must contain some hidden right answer. It is the room to check our current condition and the support we need before blaming ourselves for “still not being able to get going.” Continuing, resting, asking for help: having more options to draw on is more dependable than being invincible with nothing but an accelerator.
References (2)
- Dantzer and colleagues, “From inflammation to sickness and depression: when the immune system subjugates the brain” (2008). Article / PubMed record. A review of sickness behavior and the relationship between inflammation and depression.
- National Institute of Mental Health (NIMH), Depression. A general-audience guide to symptoms, diagnosis, and treatment.
