Equal parts fascination and disbelief. An introduction to the weird, wonderful, occasionally dysfunctional machinery running the show.
The human brain is an incredible piece of biological machinery.
It keeps us alive, interprets the world around us, creates and stores memories, processes emotions, and allows us to contemplate our own existence.
It can also convince us that every single person on planet Earth hates us because someone took three hours to text back. It can turn a mildly embarrassing interaction from 2017 into a full-blown psychological thriller. It can make us feel like we're dying when we're actually just experiencing a panic attack. And, on particularly ambitious days, it can convince us that the towel hanging on the back of the bathroom door is an intruder.
A real fucking technological marvel.
However, the brain is also responsible for some of the most extraordinary things humans have ever accomplished. Medicine. Music. Space exploration. Entire philosophical frameworks dedicated to figuring out what the hell we're doing here.
And yet, some days, the entire operation feels like it's being run by an unpaid intern with an Adderall addiction and absolutely no fucking supervision.
So, what gives?
Why do we think the things we think? Why do we feel things we don't want to feel? Why can we understand something perfectly well on a logical level and still react as though our lives are actively ending? Why does the brain sometimes seem determined to make an already difficult experience significantly more difficult?
Welcome to neuroscience and psychology, where the machinery is extraordinary, the user manual is incomplete, and nobody can agree on why the fuck we do half the things we do.
Let's get into it.
Why can't we just stop thinking about it?
You know the thought.
The one you don't want to have. The conversation you keep replaying. The embarrassing thing you said three years ago. The hypothetical catastrophe your brain has decided deserves a full investigative documentary, complete with supporting evidence and a worst-case-scenario finale.
You've already thought about it approximately 700 times.
You've analyzed every possible outcome. You've argued with yourself. You've Googled something you probably shouldn't have Googled. You've decided you're being ridiculous.
And somehow, there it fucking is again.
Rumination and intrusive thoughts aren't the same thing, but both can make being inside your own head exhausting as hell.
Rumination involves repetitive thinking about problems, experiences, or feelings, often without reaching a useful conclusion. Intrusive thoughts are thoughts, images, or urges that enter your awareness involuntarily and may be unwanted or disturbing.
And here's something worth knowing: having a thought doesn't mean you want it, agree with it, or intend to act on it.
This was a hard thing for me to understand and accept during my crisis. I was having these terrifying, awful thoughts, and I genuinely believed they made me a bad person. Because if I'm thinking these things, that must mean I subconsciously intend to do them or, worse, secretly want to. Right?
WRONG.
The brain generates thoughts. Some are useful. Some are stupid as fuck Some are downright horrifying. Not every thought deserves a committee meeting.
Intrusive thoughts are common, including thoughts that people find disturbing or completely inconsistent with their morals and values.
For example, if you've ever had an unwanted thought about something terrible happening, congratulations. You're a human being with a brain that generates thoughts without asking your fucking permission first. Gotta love it, right?
The distinction becomes particularly important in obsessive-compulsive disorder (OCD), where intrusive thoughts can become tangled up with persistent doubt, distress, and compulsive attempts to obtain certainty or neutralize perceived danger.
And if there's one thing an anxious brain loves, it's certainty.
Unfortunately, life is not particularly interested in providing it.
Research on thought suppression suggests that deliberately trying not to think about something can sometimes make it more mentally accessible (you got that right). It doesn't happen in every situation, but it helps explain why fighting with a thought can occasionally make it more persistent.
Try not to think about your grandma naked.
There it is.
You're welcome. 😉
The goal isn't necessarily to eliminate every unwanted thought. It's often to change how we respond to it, how much meaning we assign to it, and whether we feel compelled to do something about it.
A thought can exist without becoming a reality.
Which brings us to another delightful feature of the human experience: knowing this does not automatically mean feeling better.
If it did, therapists would be out of a job and approximately half the population would be cured by a well-written Instagram infographic.
The brain doesn't exist in a vacuum
We can't talk about mental health by looking at the brain in isolation.
Biology matters. So do genetics, development, relationships, environment, stress, sleep, physical health, and the experiences that shape how we respond to the world.
Mental health conditions are super fucking complicated. They aren't adequately explained by one neurotransmitter being too high or too low, one brain region malfunctioning, or one bad experience.
You've probably heard that depression is caused by a serotonin deficiency or that anxiety is simply an overactive amygdala.
These explanations are attractive because they give us something simple to hold onto when the actual answer is considerably messier.
But the science is more nuanced.
Neurotransmitters are important chemical messengers. Brain circuits play essential roles in mood, motivation, attention, learning, and emotional processing. But psychiatric conditions involve complex interactions among biological, psychological, and social factors.
We're still learning why two people can experience similar circumstances and respond completely differently, why a treatment helps one person but not the other, and why symptoms can persist even when someone understands exactly what's happening.
That's not a failure of science. It's a reminder that the subject is confusing and complicated as hell.
And honestly, I'd rather have an uncomfortable, evidence-based answer than a confident explanation that falls apart the moment someone actually looks at the research.
Psychiatry has not always gotten it right
If you want to explore the history of mental health care, buckle the fuck up.
Some of it is fascinating. Some of it is horrifying. And some of it makes you wonder how a medical practice became accepted before its risks, benefits, and ethical implications were adequately understood.
Let's talk about lobotomies.
During the twentieth century, psychosurgery became a prominent treatment for severe psychiatric illness. Portuguese neurologist António Egas Moniz developed a procedure called leucotomy in the 1930s. American neurologist Walter Freeman later became a major advocate of lobotomy, including a transorbital technique that became notorious.
The procedure disrupted connections in the brain’s frontal lobes in an attempt to eliminate psychiatric symptoms. In simpler terms, they were trying to fix the brain by scrambling the fucking eggs.
In 1949, Moniz received the Nobel Prize in Physiology or Medicine for his work on leucotomy.
Read that shit again.
A procedure that could permanently alter a person's personality, cognition, and ability to function received one of medicine's highest honors.
The history is complicated. Some physicians reported improvements in symptoms, and families sometimes sought treatment when other options were limited or had failed. But lobotomies could also cause devastating cognitive impairment, profound disability, personality changes, and death.
Patients' ability to provide informed consent was basically nonexistent, and some people subjected to psychosurgery were particularly vulnerable to institutional pressure or had little control over their treatment.
The fact that a procedure gained medical legitimacy did not automatically make it safe, appropriate, or ethically justified for everyone (or really anyone) who received it.
And that's the part of psychiatric history I find particularly important: medicine is not immune to cultural bias, institutional power, ethical failure, or misplaced confidence.
What happens when a treatment is implemented faster than its evidence develops? Who decides whether the benefits outweigh the risks? What happens when the people receiving treatment have less power than the people providing it?
These aren't just historical questions. These are NOW questions.
Understanding psychiatry's past means acknowledging both its progress and the people harmed along the way. It means being willing to question accepted practices, examine the evidence, and recognize that good intentions do not equal good outcomes.
We're going to explore more of this history here, because mental health care deserves more than a sanitized timeline of scientific breakthroughs.
Sometimes the story is impressive. Sometimes it's ugly. Sometimes it's both.
And sometimes, the appropriate response is to sit back and ask, What the actual fuck were we thinking?
So, what the hell is the point of all this?
The brain is extraordinary.
It allows us to learn, adapt, connect, create, and experience the world in ways we're still working to understand.
It can also contribute to patterns of thinking and reacting that leave us exhausted, frightened, and stuck in our own heads.
Understanding those patterns doesn't mean we can simply switch them off. Learning about anxiety doesn't automatically cure the anxiety. Understanding trauma doesn't erase its lasting effects. Knowing an intrusive thought isn't an intention doesn't necessarily make it less distressing.
But knowledge and understanding gives us somewhere to start.
It helps us distinguish a feeling from a fact, a thought from an intention, and an established scientific finding from an explanation that sounds good but doesn't hold up under scrutiny.
It helps us ask better questions about treatment, challenge stigma, recognize the limits of what we know, and approach other people's experiences with a little more curiosity and a little less judgment.
That's what I want this space to be about.
We're going to talk about neuroscience, psychology, psychiatric diagnoses, research studies, treatment controversies, and the history of how we've tried to understand the human mind. We'll look at what the evidence supports, what remains uncertain, and what happens when the science is considerably more complicated than the headline.
Some topics will be fascinating. Some will be uncomfortable. Some might challenge things you thought you understood.
And some will probably make you wonder how the hell we've made it this far as a species.
Fair question.
The human brain is a horrible little miracle.
And we're just getting started
Receipts & References
Because we're not just going to make shit up and call it neuroscience.
The following peer-reviewed papers and scientific resources are useful starting points for the topics explored in this article.
The brain, threat processing, and emotion
- LeDoux, J. E., & Pine, D. S. (2016). Using neuroscience to help understand fear and anxiety: A two-system framework. American Journal of Psychiatry, 173(11), 1083–1093. https://doi.org/10.1176/appi.ajp.2016.16030353
Intrusive thoughts and thought suppression
- Wegner, D. M., Schneider, D. J., Carter, S. R., III, & White, T. L. (1987). Paradoxical effects of thought suppression. Journal of Personality and Social Psychology, 53(1), 5–13. https://doi.org/10.1037/0022-3514.53.1.5
The history of lobotomy and psychosurgery
- Caruso, J. P., & Sheehan, J. P. (2017). Psychosurgery, ethics, and media: A history of Walter Freeman and the lobotomy. Neurosurgical Focus, 43(3), E6. https://doi.org/10.3171/2017.6.FOCUS17257
Explore the research yourself
- PubMed: Biomedical and psychiatric research
- PubMed Central: Free full-text research articles
- National Institute of Mental Health
An editorial note: This article is educational and is not intended to diagnose or treat a mental health condition. Scientific understanding evolves, and individual experiences can differ from general research findings.
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