You know how you feel when you’re hungry? I’m not talking about moods or anything, I’m talking about the direct sensation, that pang at the top of your stomach with the rumble underneath. The gas light coming on for your body.
Imagine if you didn’t know what that meant. Imagine that you sometimes – often, even – got this feeling, but you didn’t know it was associated with needing food. You would get this pang, and maybe you’d take medicine or something. Maybe you’d lie down for a bit. Sometimes you’d eat because something tasted good or because you’d gone out with friends, and the feeling would go away – but you never put together the cause and effect.
That would be pretty miserable! You might even know that you need to eat, but if you never put the signals together you probably aren’t eating right, or eating enough. You might be surviving but you’d be hungry a lot without realizing that’s what you were. You’d not only have physical pain, but you’d have all the downstream effects, too – poor health, brain fog, mood swings, etc.
Our ability to correctly interpret the signals our body sends is paramount to a good life. We also need to temper and influence those signals, of course – but properly interpreting them in the first place is primary. All unpleasant signals from your body – all the pain, the discomfort, etc. – is your body warning you about something, hopefully changing your behavior. Your brain interprets those signals from your stomach as pain so that you’ll eat to relieve them.
Of course, that only works if you interpret the signals correctly. Okay, new hypothetical. Imagine a creature that has all those same signals. Hunger pangs when it needs to eat, yawns when it needs to sleep, and so on. But imagine this creature also gets random pains – signals not associated with any necessary behavior changes. Like a pain without a focal area.
This would clearly be bad! At best, it would cause the creature to doubt the true signals its body sends, and at worst it may cause the creature to pursue all sorts of bonkers behaviors in an attempt to get the signal to stop. In any case, the creature would have a pretty miserable life. So it stands to reason that “random, meaningless pain” isn’t an evolutionary advantage. Creatures with such a feature won’t exactly win the natural selection championships.
So it stands to reason that we probably don’t have random, meaningless pain.
Now sure, people can have individual damage and defects. If you’ve been in a severe car accident, you may have chronic pain for the rest of your life that doesn’t correspond to a specific, acute damage or necessary behavioral change. But if you find out that a huge percentage of the population of a species is experiencing the same kind of pain, it seems much more likely that this particular pain is a feature, not a bug. It’s pain that’s trying to warn you about increasing damage or necessary action, not the signals of a broken transmitter.
Remember my first example about the hungry person who didn’t understand what hunger pangs were? It’s not that they never ate, it’s just that they didn’t eat as much as they should because they didn’t realize they needed to. Without realizing it, they were accidentally doing what they needed to sometimes. So the pain comes and goes, but they don’t know why.
Well, modern life is, in many ways, totally different from the primary environment that shaped our evolution for hundreds of thousands of years. What if we need aspects of that environment and we haven’t realized that we’re not getting them?
Here’s an example: Humans need vitamin D. It’s really important, and there are plenty of health risks that come from not getting enough. But I’ll bet you can’t tell if you, right now, are low on vitamin D with the same level of accuracy and confidence with which you can tell if you’re hungry or sleepy. Why not?
Here’s my guess: You’ll die without water in a few days, so your “thirst” signals are strong. You can last longer without food but you’ll still see negative impacts quickly, so the same with your “hunger” signals. “Suffocating” and “cold” signals are likewise strong, because of how immediate the danger is. But the body’s signals are weaker when the condition is both A.) something that will kill you slower and B.) something the body expects you to get plenty of anyway, without much behavioral change.
So think about sunlight. You really will die without it (or without a lot of substitutes). In our evolutionary past, we got plenty of it without trying. But today, modern life is so weird from an evolutionary perspective that there are genuinely lots of people who don’t get enough sunlight.
So, a quick aside: among people who suffer from depression, there’s a sort of running joke. The joke is that despite the complex realities of the suffering caused by that condition, people who don’t understand it will often give the most basic and useless (albeit well-meaning) advice, along the lines of “Have you tried just going outside?” People with depression treat that comment (and those like it) with the same derision as comments like “Have you tried just not being gay?”
I was one of those people, for a long time. At some point, I realized that it’s bad to create a culture out of your flaws. But even beyond that, I realized that most of those well-meaning people asking about going outside were totally correct.
Look, some people really do have an actually damaged signaling system that is giving them pain signals when it shouldn’t. But it’s a tiny minority of the people who “suffer from depression.” In attempting over years to understand my own suffering, I’ve realized some facts I believe to be true.
When tech support asks if you’ve “turned it on and off again,” it’s a joke – but they ask that because it really does fix most problems, and if you haven’t tried the basics then you shouldn’t look for more complex solutions. General malaise and depression are signals that your body is sending – and if the underlying system is working properly (as we must assume it is in the majority of cases), then that signal means something. Before you take a bunch of meds to kill the signal, you have to at least try responding to it.
The basics aren’t that complicated, we’ve just engineered a lot of our lives such that we don’t get them automatically as much. We’ve hidden ourselves from sunlight. We don’t eat right. We don’t get physically exhausted every day. We don’t interact with physical people in the spaces around us. But those are all things we need as much as food, water, and oxygen.
When you ask a depressed person “Have you tried just going outside,” they roll their eyes and scoff. As if it were that easy! But in my experience, they almost never go outside. The problem is that going outside once doesn’t magically cure all depression, the same way one meal won’t cure a vitamin deficiency. So they go outside, don’t feel less depressed, and then go further back into a life without sunlight. It’s self-fulfilling.
Lifestyle changes sustained over time are about the only way to align your actions with the body’s signals.
An important note – This is automatically implied to be true with every one of my posts, but I’ll state it more directly here: I am not an expert on all of humanity. I write reflections of my own experience and things I believe to be true. If your experience with depression isn’t the same as mine, that is what it is. But if you’re open to advice, mine is likewise a reflection of my own experience. Before you assume your feelings are a medical condition that needs to be treated, get all the basics right. Go three months where you spend time in the sun every single day; have numerous conversations with real, physical people in your presence; eat a balanced and nutritious diet; cut out or severely minimize obvious poisons like nicotine, alcohol, caffeine, and other drugs; sleep a full night every night; physically exhaust yourself at least once each day; hug someone every day; and do work that helps your community and provides some purpose.
You may do all of that and still feel depressed. If that’s the case, you may have an actual medical condition, but at least you’ll know. For a huge number of people though, I’m certain doing all of that, sustained for at least three months, will work wonders.