- Introduction/hook about pain
- Jo Cameron's story
- The science explained simply
- The dangers of pain insensitivity
- The future (gene therapy potential)
- Ethical considerations
- My own thoughts/closing
The Woman Who Never Needed Painkillers
Let me ask you something: What would your life look like if you couldn't feel pain?
I know what you're thinking — probably something along the lines of "that sounds amazing." No more backaches, no more headaches, no more aching joints on a cold morning. Sounds like a dream, right?
Well, meet Jo Cameron. She's a Scottish woman who genuinely cannot feel physical pain. And while that might sound like the ultimate superpower, her story is actually a fascinating window into both the limits of human biology and some genuinely exciting possibilities for treating chronic pain.
When Jo was 66, she had surgery on her hand. The anesthesiologist was skeptical when she told him she wouldn't need any painkillers afterward — but hours later, she was completely comfortable. She checked out of the hospital having taken exactly one dose of acetaminophen, which the nurses basically made her take just to cover their bases.
Her doctor, Devjit Srivastava, was intrigued. He looked through her medical history and found the same pattern everywhere. She'd refused painkillers after a hip replacement. On every medical form, she'd written her pain level as zero. When they brought her in for testing, the results confirmed what seemed impossible: Jo's body genuinely doesn't register physical pain.
But Wait — Pain Is Actually Important
Here's where things get interesting. Before we all start dreaming about a world where nobody hurts, let's talk about why pain exists in the first place.
Pain isn't just an unpleasant sensation. It's your body's alarm system. It's the warning that tells you to pull your hand off a hot stove before you do serious damage. It's the ache that tells you to rest an injured ankle. It's the signal that says "something is wrong here — pay attention."
Without that alarm, everyday life becomes surprisingly dangerous. Children born with congenital insensitivity to pain often bite off parts of their tongues because they don't realize they're hurting themselves. They can burn their mouths on scalding food without flinching. Small cuts and burns go unnoticed until patients see their own blood or smell burned flesh.
"It's not necessarily a superpower," James Cox, a geneticist at University College London who studied Jo's genome, told me. "Without pain, life becomes a series of undetected physical disasters."
Jo herself has had her share of injuries she didn't notice until much later. The inability to feel pain sounds wonderful until you realize it's also an inability to know when your body needs care.
The Science Behind Jo's Uniqueness
So what makes Jo different? Here's where it gets really cool.
Most people with pain insensitivity have mutations in their pain receptors — the specific nerve endings that detect damage. But Jo's case is different. Her mutations are in something called the FAAH gene and a nearby sequence that scientists have nicknamed "FAAH-OUT."
Think of it like this: Your body naturally produces chemicals called endocannabinoids — similar to the compounds in cannabis — that help regulate pain and mood. One of these, called anandamide (which comes from the Sanskrit word for "bliss"), is part of your body's natural pain management system.
Normally, your body uses an enzyme called FAAH to break down anandamide once it's done its job. It's a careful balancing act — enough anandamide to keep you comfortable, but not so much that you can't feel anything at all.
Jo has mutations in both copies of her FAAH gene, plus a rare microdeletion in FAAH-OUT. The result? Her body doesn't break down anandamide the way it should. She essentially has elevated levels of this natural pain-relieving chemical coursing through her system all the time.
Some writers have compared her physiology to being "permanently high on marijuana." That's a bit of an oversimplification — Jo was born with these mutations, so her entire life and development happened within this genetic context — but it's not entirely wrong either. Her baseline state is different from ours in ways that researchers are still trying to understand.
What This Means for the Rest of Us
Here's where Jo's story might actually help millions of people.
Chronic pain is a silent epidemic. Roughly 1.5 billion people worldwide live with some form of persistent pain. It's one of the most common reasons people see doctors, and it's notoriously difficult to treat. Current medications — opioids, NSAIDs, gabapentinoids — come with serious side effects and addiction risks.
What if we could develop a treatment that "turns down" chronic pain the way Jo's genetics do? Not eliminating pain entirely (because, remember, pain is important), but reducing it to manageable levels?
Researchers think this might actually be possible. The goal isn't to make everyone like Jo — that would be dangerous. Instead, they're exploring whether gene therapies could temporarily adjust the anandamide system in people with severe chronic pain. Think of it like a dimmer switch rather than an on-off button.
James Cox, the geneticist who mapped Jo's genome, says a gene therapy for pain is theoretically feasible — even if we're probably still years away from anything available at your local pharmacy. The science is moving fast, but development and approval take time.
The Big Questions Nobody's Talking About (But Should Be)
I'm genuinely excited about the possibilities here. The idea that we could relief suffering for millions of people with chronic pain using our own body's natural systems? That's beautiful.
But I also think we need to have some honest conversations before we get there.
First, there's the question of access. If gene therapies for pain become reality, who gets them? These treatments will likely be expensive, at least initially. Will they be available to everyone who needs them, or just those who can afford cutting-edge medicine? This isn't hypothetical — we already see this with many new treatments.
Second, what's the line between eliminating suffering and eliminating a vital human experience? Pain is unpleasant, absolutely. But it's also information. It's feedback. It's part of what makes us human. When we start tinkering with our biology at this level, we need to be thoughtful about what we're changing and why.
And third, what happens when people have their pain "dimmed" but still need to function in a world full of hazards? How do we help people adapt to altered pain perception safely?
My Take
Look, I think the research on Jo Cameron is genuinely important. The potential to help people trapped in chronic pain — pain that limits their lives, their work, their relationships, their joy — is enormous. If science can find a way to safely modulate pain using our own biology, that could be transformative.
But I also think Jo's story reminds us that our bodies are more sophisticated than we often realize. Pain isn't an enemy to be eliminated entirely. It's a feature, not a bug.
What we really need is balance — and maybe, just maybe, Jo Cameron's strange and wonderful genetics will help us find it.