An 80-year-old woman living with advanced Alzheimer’s disease amazed researchers after an experimental treatment involving psychedelic mushrooms appeared to briefly restore parts of her memory and personality. The Japanese-American woman had spent nearly a decade losing her independence to Alzheimer’s, eventually becoming unable to communicate beyond single syllables and relying heavily on caregivers. During a study published in Frontiers in Neuroscience, researchers administered a five-gram dose of psilocybin, the psychedelic compound found in magic mushrooms. At first, the reaction seemed troubling, as the woman became agitated and entered a sleep-like state. However, nearly 19 hours later, she suddenly began recalling autobiographical memories and speaking for hours. During a second session, she became even more expressive, describing peaceful memories of surfing with her son and showing improved facial expressions, humor, emotional connection, and mobility. For family members and caregivers who had watched Alzheimer’s gradually erase her personality, the changes were emotional and difficult to ignore.

In the weeks following the treatment, caregivers continued observing what researchers called “clinically meaningful improvements.” The woman regained bladder control, moved more easily, interacted socially, and communicated far more than she had before the experiment. Some of these changes reportedly lasted for over a month, giving scientists hope that certain memories and abilities lost to Alzheimer’s may still exist beneath damaged neural pathways. Researchers stressed that the treatment is not a cure, as the woman’s disease continued progressing and the improvements eventually faded. Because the study involved only one patient, scientists caution that far more research is needed before drawing broader conclusions. Still, the findings have sparked growing interest in whether psilocybin could help reconnect parts of the brain affected by dementia. Researchers at institutions including Johns Hopkins University are now exploring whether psychedelic therapies may someday offer new hope for patients living with memory disorders.