Grief seldom moves in straight lines. Rather, grief can be more like the ever-changing weather over the ocean or like the relentless tides against a rocky coast. Some days it is mist. Some days it is stormy. And sometimes, it becomes stone.

I meet people years after a loss who share, “I know it has been a long time, but it still feels like yesterday.” Their lives have continued. They work. They parent. They show up. Yet their bodies remain braced, as if the moment of loss is still unfolding.

This is where the conversation about psychedelic-assisted grief therapy begins. Not because someone wants spectacle. Not because they want to escape grief. But because their limbic system has not completed what began on the day everything changed.

Let me begin with Luna.

Luna lost her partner three years ago. She attended therapy. She joined support groups. She exercised. She read the books. From the outside, she appeared resilient. Inside, her body told another story.

When she spoke her partner’s name, her chest tightened. Her breath shortened. Her heart raced. Her nervous system shifted into alarm. She was not constantly crying. She was frozen.

This is not weakness. It is physiology.

Acute loss activates survival circuitry. The amygdala signals threat. The hypothalamic pituitary adrenal axis mobilizes stress hormones. The body prepares for danger. In sudden or traumatic loss, that activation may not fully resolve. The organism remains partially locked in shock. In simpler terms, the body and the brain long for some relief from the prolonged grief symptoms and sometimes it is through altering the mind that people find a way to find meaning and a new somatic baseline.  

From a neuroscience perspective, certain psychedelic compounds temporarily decrease activity in the default mode network, the system associated with self referential rumination and rigid narrative loops. Grief loops often sound like this: If only I had. This should not have happened. I cannot live without them.

When these networks soften, neural connectivity becomes more flexible. Brain regions that do not usually communicate begin exchanging information. Emotional memory can surface without triggering immediate defensive shutdown. The nervous system may finally complete a response that was interrupted.

Still, the medicine is not the therapy. The therapy is the container. And the time before and after the journey are very important parts of the whole process. 

Preparation includes medical screening, medication review, nervous system regulation, breath practices, and clear intention. Research increasingly shows that therapeutic outcome correlates strongly with relational safety, set and setting, and integration support.

Luna’s intention was simple: Help my body release the pain and let my heart remember my mate.

During her session, there were no Hollywood-style fireworks. There was tightening in her chest. There were tears. But something different happened. The sensation did not escalate into panic. Her breath remained present. The grief moved through her like an ancient lament, a keening older than language.

From my Celtic lens, I recognized it immediately. In old Ireland, grief was voiced through keening. It was sung. It was primal. It was allowed to move. Luna’s body was doing what culture once supported, but modern society often suppresses.

Afterward, she said, “It did not scare me.”

That is often the turning point. Grief itself is not what freezes us. It is the fear of being overwhelmed by it.

There are times, however, when grief remains deeply embedded. Prolonged Grief Disorder is now recognized as a clinical condition marked by persistent yearning, difficulty accepting the death, identity disruption, and functional impairment beyond cultural norms. It is mourning that cannot metabolize.

And, then there is David. 

David lost his son unexpectedly. Two years later, he still woke each morning in disbelief. He avoided reminders. He felt detached from his living family. He described himself as half alive.

In cases like David’s, I sometimes consider whether plant medicine such as ayahuasca could be effective. Ayahuasca is a traditional Amazonian brew that combines DMT with monoamine oxidase inhibitors. It alters serotonergic signaling and profoundly shifts perception, emotion, and autobiographical memory. It also carries medical risks and requires strict screening and preparation.

My humble clinical opinion is that psychedelic-assisted therapy may help some individuals access what psychiatrist Dr. Stan Grof described as the perinatal matrices.

Grof proposed that certain layers of psychological distress are rooted not only in personal biography but in deep pre-verbal imprints related to birth and existential threat. He described four basic matrices ranging from oceanic unity to entrapment, struggle, and eventual release.

While his framework remains theoretical and debated, many clinicians observe that profound grief can reactivate these preverbal and instinctual layers. Sudden loss can feel like suffocation. Like being trapped. Like annihilation. The body responds not only to the event of loss but to something archetypal and preverbal.

In carefully prepared ayahuasca ceremonies, some individuals report moving through intense phases of constriction, struggle, and release that mirror these patterns. Whether interpreted psychologically or spiritually, the experience can culminate in a sense of renewed connection or rebirth.

In David’s case, after extensive screening and collaboration with his physicians, his ceremony was deeply somatic. He experienced waves of pressure and grief that felt unbearable, followed by profound release. During integration, he said, “My love for him does not have to destroy me.”

That shift matters, and David self-reported a significant alleviation of prolonged grief symptoms. 

Ayahuasca does not ‘cure’  grief. It can expand grief capacity. It can allow a continuing bond with the deceased to feel stabilizing rather than shattering. Emerging research suggests that mystical-type experiences and feelings of connectedness are associated with improvements in depression, trauma, and complicated grief. The common denominator appears to be increased psychological flexibility and decreased experiential avoidance.

As the late Terence McKenna and all modern PAT researchers remind us, psychedelics are not a panacea. They are tools. Tools require discernment, humility, and skilled guidance.

Luna could speak her partner’s name without panic.
David could remember his son without collapsing.

Their grief remained. But it moved.

In Celtic spirituality, there is a concept of thin places, where the veil between worlds feels permeable. Psychedelic states can create a temporary inner thin place where memory, sorrow, love, and presence coexist without tearing the psyche apart.

This modality is not easy, and in most places it is still illegal and inaccessible to many.  It is not glamorous. It is not for everyone. It requires medical oversight, psychological readiness, and careful integration.

But for some whose grief has turned to stone, whose limbic systems remain locked in shock, or whose sorrow has activated something deeper and more primal, psychedelic-assisted therapy may open a door.

Not to treat grief like there is something ‘wrong,’ but instead to remind us, like Pema Chodron stated: “Remember, you are the sky and everything else is the weather.”