Abram Hoffer

Abram Hoffer was a Canadian psychiatrist and research director whose collaboration with Humphry Osmond helped turn LSD research in Saskatchewan from an attempt to reproduce mental illness into an early form of psychedelic therapy. At Saskatchewan Mental Hospital in Weyburn, their investigations culminated in a treatment hypothesis tested on more than seven hundred people with alcohol dependence. The work’s lasting importance lay not only in its reported results, but in Hoffer and Osmond’s insistence that what patients experienced could be central to treatment.

Research in Weyburn

Hoffer entered the narrative as Osmond’s like-minded colleague and research director at Saskatchewan Mental Hospital in Weyburn, a remote agrarian community in western Canada. The provincial government had sought to make Saskatchewan a center of medical research, offering funding and unusual latitude to researchers. Osmond, whose mescaline research had met resistance at St. George’s Hospital, moved there after responding to an advertisement in the Lancet. The hospital became an important center for research into compounds then called psychotomimetics: substances understood as mimicking psychosis.

Hoffer and Osmond began their experiments with LSD-25 supplied by Sandoz. Their initial framework treated the drug as a possible window into the biochemistry of mental illness. The research also took place amid wider scientific questions about how a tiny quantity of a chemical could produce such powerful changes in perception and thought. Within their own work, however, the question gradually moved beyond what LSD might reveal about illness to what the experience itself might do for a patient.

The pair administered LSD to dozens of people, including colleagues, friends, family members, volunteers, and themselves. This breadth of participation placed the researchers inside the inquiry as well as in charge of it. They were not studying only an abstract chemical effect: they were collecting accounts of sessions and considering how those experiences related to the people undergoing them.

Reconsidering the psychosis model

A decisive turn came in 1953 during a late-night brainstorming session in an Ottawa hotel room. Hoffer and Osmond noticed that LSD experiences seemed to share features with delirium tremens, the severe, prolonged disturbance that can occur during alcohol withdrawal. Some people recovering from alcoholism understood the ordeal of delirium tremens as a conversion experience and as part of the spiritual awakening that helped them remain sober. The resemblance suggested a new therapeutic possibility: perhaps a controlled LSD experience could reproduce something of that crisis and help a patient stop drinking.

The idea initially struck them as so strange that they laughed at it. Once the laughter passed, they treated the question seriously and formed a hypothesis: could an LSD-produced delirium, administered under control, help people with alcohol dependence remain sober? Their proposal followed the psychotomimetic model, but gave the model a therapeutic purpose. Rather than merely imitating psychosis for research, a single high-dose session might create an ordeal resembling delirium tremens and shock a patient into sobriety.

The reports gathered in the course of the work soon complicated that explanation. When Hoffer and Osmond examined what volunteers said they had experienced, their accounts often bore little resemblance to delirium tremens or to madness. Reports included hallucinations, paranoia, and anxiety, but also a feeling of unity with the world, intensified sensation, a new capacity to view oneself objectively, and profound understanding. For many patients at Weyburn, the experience seemed closer to transcendence or spiritual epiphany than to temporary psychosis.

This discrepancy led Hoffer and Osmond to question whether the psychotomimetic model—and the name attached to it—could adequately describe what was happening. Aldous Huxley’s account of mescaline, which he considered unlike psychosis, strengthened their doubts. Experiences a psychiatrist might classify as depersonalization, hallucination, or mania might instead be understood as visionary or mystical. The change did not erase the possibility of distressing reactions; it made the researchers more attentive to the range of experiences their original framework had grouped under madness.

Treatment and the patient’s experience

Over the following decade, Hoffer and Osmond tested their alcohol-treatment hypothesis with more than seven hundred patients. They reported that roughly half became sober and remained so for at least several months. They regarded the approach as more effective than other therapies, and the reported outcomes prompted a new emphasis in their account of treatment: the chemical was not necessarily the decisive factor; the experience it occasioned could be.

That emphasis marked a departure from the behaviorist assumptions dominant in psychology, where observable, measurable behavior mattered and subjective experience was often treated as irrelevant. Hoffer and Osmond’s attention to patients’ descriptions brought the interior account of a session back into the clinical picture. Their work thus joined a practical question—whether patients stopped drinking—to a larger methodological one: whether treatment could be understood without attending to what a person felt and made of the experience.

The treatment also depended on circumstances beyond dosage. Hoffer and Osmond learned from volunteers that the setting in which LSD was taken affected the experience, and that an engaged, empathetic therapist could help prevent a session from going badly. They suspected that some psychotic reactions might be artifacts of the impersonal clinical environment: a bare room and a white-coated clinician. The terms set and setting were not yet being used for this work, but the researchers were already recognizing that the surroundings and the human relationship could shape the outcome.

Results, replication, and legacy

By the end of the 1950s, LSD was widely regarded in North America as a promising treatment for alcohol addiction. On the strength of the Saskatchewan results, the provincial government helped make LSD therapy a standard treatment option for people with alcoholism. The research therefore moved beyond the hospital: a local clinical program became part of provincial policy, and the reported success invited scrutiny from other medical institutions.

In the early 1960s, Toronto’s Addiction Research Foundation set out to replicate the trials with tighter controls. Its clinicians sought to isolate the drug’s effects from other variables. Patients received LSD in neutral rooms, while clinicians were instructed not to engage with them during their sessions except to administer an extensive questionnaire. Some volunteers were restrained or blindfolded, or both. The results did not match those reported from Saskatchewan, and several volunteers had frightening experiences.

The divergence produced two conclusions that were in tension but not mutually exclusive. Critics could point out that the treatment did not work as well under the Toronto study’s controlled conditions. Supporters could answer that those conditions removed the therapeutic attention and supportive setting that had been integral to the Saskatchewan approach. The contrast sharpened the question Hoffer and Osmond’s work had raised: whether a psychedelic treatment could be evaluated as a drug effect alone, apart from the relationships and environment through which the experience unfolded.

Hoffer’s significance in the book rests on this shift in emphasis. He began within a model that treated LSD as a means of inducing or studying psychosis, then helped investigate a treatment designed around that very premise. The patients’ reports unsettled the premise: many described experiences that were positive, meaningful, or transcendent rather than simply psychotic. By taking those reports seriously, Hoffer and Osmond made subjective experience part of the therapeutic argument, while the contested replication showed that the experience could not be separated neatly from the conditions in which it occurred.