Here's something that sounds impossible:
Two-thirds of people who lose a limb feel pain where that limb used to be.
Not just mild discomfort. Severe, crippling pain. Like the missing limb is being crushed, twisted, or severed.
But the limb isn’t there.
Physiologically, it makes no sense. The body part is gone. There’s nothing to hurt.
Yet the pain is absolutely real.
It’s called phantom limb pain. And for decades, nothing has been able to cure it.
Until someone tried psilocybin.
In 2016, Albert Lin—a research scientist and National Geographic Explorer—was in a car accident.
His lower right leg was amputated due to infection.
Shortly after, he started feeling excruciating pain where his leg used to be. His phantom foot felt stuck in a tightly flexed position at the ankle. The pain hit several times per day.
Nothing worked.
Not medications. Not therapies. Not mirror techniques (where you trick your brain with reflections).
So he tried psilocybin.
He went to Joshua Tree with his girlfriend, took a dose of mushrooms, and used a mirror box while tripping.
The pain disappeared.
Not temporarily. Not partially. It was essentially eradicated.
A case study was published. Sample size of one. But it was enough to ask the question: Could this work for others?
Neuroscientist Fadel Zeidan at UC San Diego decided to find out.
He ran a small safety study with nine amputees experiencing phantom limb pain. Five received psilocybin. Four received a placebo.
The results were stunning.
The psilocybin group experienced a 50 to 75 percent reduction in pain.
Not just immediately. The relief lasted weeks. At the two-week and four-week marks, pain levels showed a “beautiful staircase effect”—meaning the psilocybin kept working after the dose ended.
Remember: Nothing else works for this condition.
30 percent improvement is considered clinically significant. This study showed 70 percent reduction four weeks out.
Three weeks ago, Zeidan received a $4 million NIH grant to conduct a full clinical trial.
Phantom limb pain might finally have a treatment.
Here's the weird part.
Phantom limb pain doesn’t make physiological sense. There’s no damaged tissue. No nerve endings. No physical injury.
But the brain doesn’t care.
When you lose a limb, the brain’s sensory cortex—the area that processed signals from that limb—doesn’t just shut off. It reorganizes itself. It keeps firing signals as if the limb is still there.
The organism’s safety system is still screaming: “Something is wrong.”
Even though the danger has passed. Even though the limb is gone.
It’s a hallucination of pain.
And Zeidan had a wild theory: What if you treat a hallucination with a hallucination?
What if psilocybin could press “control, alt, delete” on the brain’s pain system and let it restart with accurate information?
Turns out, it might.
Zeidan's team ran fMRI scans before and after dosing.
They found something fascinating.
Psilocybin caused:
- Greater deactivation of the thalamus (central hub for pain processing)
- Quieting of the Default Mode Network (where self-referential processes live)
- Increased activity in the primary somatosensory cortex (the area that reorganizes after amputation)
Translation:
The brain regions responsible for creating and maintaining the phantom pain signal were being rewired.
The more brain activity in the somatosensory cortex during the session, the greater the pain relief four weeks later.
Psilocybin wasn’t masking the pain. It was rehabilitating the brain’s pain processing system.
If psilocybin can treat pain that has no physical source, what does that mean for chronic pain in general?
Zeidan’s insight:
Most chronic pain isn’t just about damaged tissue. It’s about how your brain processes and interprets pain signals. And more importantly, it’s about your relationship with pain.
People in mindfulness studies report that after training, they still feel pain—it just doesn’t bother them anymore. They stop identifying as “a person living with chronic pain.” The pain doesn’t contaminate their entire experience anymore.
Psilocybin might do the same thing.
It changes how you relate to the pain. It dissolves the ego’s attachment to the pain as part of your identity.
You still feel it. But it doesn’t define you anymore.
The limb is gone. The danger has passed. The system can relax now.
The body part is gone. There's nothing physically wrong.
Yet the pain is absolutely real. Because pain lives in the brain, not the body.
For decades, medicine has tried to fix chronic pain by targeting the body. Surgery. Implants. Opioids.
Psilocybin targets the brain instead.
It doesn’t mask the pain. It reorganizes how the brain processes it. It changes the relationship you have with it.
And the effects last long after the mushrooms leave your system.
Almost all of Zeidan’s patients said the same thing: The therapists mattered. The preparation mattered. The integration afterward mattered.
This wasn’t just about taking mushrooms and hoping for magic. It was about creating a container where the brain could reorganize itself. Where old patterns could dissolve. Where the relationship to pain could shift.
This isn’t just about phantom limbs. It’s about rethinking how we treat all pain.
Maybe the answer isn’t to eliminate the sensation. Maybe it’s to change how we interpret it.
Psilocybin has been doing this for millions of years. We’re just catching up.
Water Your Mind 💚
Mushie Media of the Week:
"Can psilocybin alleviate phantom limb pain? 5 questions with neuroscientist Fadel Zeidan"
by: The Microdose
