Does the brain process heartbreak and physical pain through the same pathways?
Table of Contents
Stop treating back pain as a glitch. Discover why the human spine is an evolutionary “ledger of traumatisms” and how the brain processes heartbreak as a wound.
Key Takeaways
What: Pain is a biological debt inherited from the human transition to bipedalism.
Why: Our spines weren’t designed for vertical loads, making suffering an inherent evolutionary trade-off for standing upright.
How: We heal by “bearing witness” to our fragility and understanding the shared neural links between physical and emotional injury.
Most health advice treats back pain like a mechanical failure—a glitch caused by poor posture or a sedentary life that can be “fixed” with the right ergonomic chair. But the biological reality is far more permanent. Your spine is a “ledger of traumatisms,” a physical record of the high price we paid to become human.
When our ancestors crawled out of the water and eventually stood on two legs, the lumbar region took on a heavy vertical load it was never designed to hold. Some believe we stood up to free our hands for tools; others suggest we simply wanted to bring our heads closer to the stars. Regardless of the reason, the philosopher Immanuel Kant argued that our dominance as a species and our susceptibility to back pain arrived at the exact same moment. Standing tall wasn’t a biological upgrade; it was a trade-off. We gained the world, but we inherited a spine that begins to deteriorate by the time we turn 23.
Darcey Steinke experienced this evolutionary debt firsthand when a spinal disc herniated, pressing against a nerve and sending a cascade of pain down her leg. She described feeling like a marionette with a severed cord, her lower half dangling disconnected from the rest. On land, she was an “improvised creature” bound by gravity, but in the water, she returned to the element her body originally evolved from. Her experience highlights a hard truth: the spine that makes us human was never a perfect design. It is a compromise that allows us to stand tall while ensuring we feel the cost of doing so.
Pain is rarely just a physical sensation; it is a total experience that involves memory, fear, and emotion. Neuroscience now confirms that the brain does not distinguish between a broken bone and a broken bond. Both are processed through the same neural pathways.
When a relationship ends, the brain’s attachment systems—the same ones that bond a mother to an infant—register a deep, physical loss. You aren’t just grieving a partner; for a moment, your brain feels “motherless” and unstable. This is why heartbreak leads to obsessive behaviors, like walking past an ex’s apartment or checking a phone at 3:00 a.m.. It isn’t a lack of willpower; it is a biological withdrawal akin to drug addiction. For centuries, doctors treated heartache with cooling foods and elixirs. While those cures sound strange now, the instinct was correct: heartbreak is a genuine medical condition that lives in the chest, the stomach, and the legs.
The Neurological Threshold
Sometimes, the brain generates its own suffering as a protective measure. Neurologist Oliver Sacks suggested that migraines act as a “small death”—a controlled shutdown for a nervous system pushed beyond its limits. These attacks often begin with an “aura,” a geometric shimmer or bright spot at the edge of vision.
Few people understood this better than Friedrich Nietzsche. His migraines were so violent he spent days in dark rooms, yet he viewed this suffering as a “threshold” rather than a punishment. He believed the deeper the descent into pain, the greater the potential for transformation. This neurological extremity often blurs the line between science and spirit. The visual “scintillating scotomas” of a migraine bear a striking resemblance to the divine visions recorded by the mystic Hildegard of Bingen. In these moments, pain relocates the spiritual impulse from religious doctrine directly into the suffering body.
Our Most Legible Frontier
While the spine is hidden, the skin is our first frontier and our most visible record of history. It is a porous boundary that replaces its entire outer layer every three weeks, yet it keeps a permanent record of our lives through scars and marks.
Skin is also where we find our first language: touch. Research shows that even blindfolded, humans can identify complex emotions like gratitude, fear, or love through the simple pressure of fingers on an arm. However, because skin is so visible, it is also where suffering becomes a public event. A rash or a lesion doesn’t just cause physical pain; it exposes vulnerability to the world, inviting judgment or exclusion.
The Architecture of Being Seen
If the spine represents our verticality, the knees represent our honesty. Kneeling brings us close to the earth and strips away the posture that usually separates us from our own fragility. Across history, falling to one’s knees has been a sign of surrender, protest, or prayer. At the Marian shrine at Fátima, pilgrims crawl on their knees until they bleed, reporting a strange “interior expansion” as they go.
Healing, it seems, is not always about finding a clinical cure. Often, it is about the experience of being seen in one’s pain. Artist Frida Kahlo spent her life “bearing witness” to her own suffering through her paintings. She didn’t transcend her pain; she made it legible to others.
Whether it is a surgeon promising to treat a patient’s body as his own, or millions of people gathering at a spring in Lourdes, the body registers a vital piece of information: it is not alone. In a world where many hurt in isolation, the most generous act is to acknowledge that vulnerability isn’t an exception to the human experience—it is the very thing we all share. Pain may be the tax we pay for being human, but it is also the pathway that reminds us we are alive.