Can Psychedelics Protect Your Brain as You Age?

TL;DR

•UC Berkeley has launched the first-ever neuroimaging study focused specifically on how psilocybin affects the healthy aging brain.

•Researchers believe psilocybin may boost neuroplasticity, potentially counteracting the structural brain changes and cognitive decline associated with aging.

•While most psychedelic studies focus on younger people with mental health conditions, this trial explores if psychedelics can help healthy adults age more successfully.

•In observational studies, older adults reported significant improvements in well-being after psychedelic experiences, with group connection playing a larger role than the intensity of the "trip" itself. 

As we grow older, it is natural to worry about the health of our minds. Cognitive decline, memory issues, and a rigid, less flexible way of thinking are common concerns associated with aging. While a healthy diet, exercise, and mental puzzles are standard recommendations, scientists are now exploring a surprisingly different approach: psychedelics. Could a substance famous for its role in 1960s counterculture actually hold the key to keeping our brains young and flexible?

A groundbreaking new study at the UC Berkeley Center for the Science of Psychedelics is setting out to answer exactly that. By investigating how psilocybin (the active compound in "magic mushrooms") affects the brains of healthy older adults, researchers are opening a new frontier in the science of aging. In this article, we will look at what this audacious trial hopes to discover, how psychedelics might "reboot" the aging brain, and what early research tells us about older adults who use these substances.

What is the PLASTICITY Study?

Launched in 2026, the PLASTICITY trial (Psychedelic Longitudinal Aging Study In Cognitively Healthy Older Adults) is the first psychedelic neuroimaging study specifically focused on healthy adults between the ages of 60 and 85 (1). Unlike most clinical trials that look for ways to treat existing conditions like severe depression or PTSD, this study is asking a different question: Can psilocybin promote positive outcomes and successful aging in people who are already healthy?

Participants in the study will receive a dose of synthetic psilocybin in a highly controlled, comfortable environment with trained guides. Before and after the experience, researchers will use advanced MRI scans to look for microscopic changes in the hippocampus—a part of the brain crucial for learning and memory (1) (2). They will also use psychological tests and surveys to measure changes in perception, emotional regulation, and feelings of social connection.

How Might Psilocybin "Reboot" the Brain?

To understand why scientists are so interested in psilocybin, we have to talk about "neuroplasticity." This is the brain's ability to reorganize itself by forming new neural connections. When we are young, our brains are highly plastic, allowing us to learn quickly and adapt to new situations. As we age, this plasticity naturally declines, making it harder to learn new things and sometimes leading to entrenched, negative thought patterns.

Previous studies in animals have shown that psilocybin can rapidly increase the number of synaptic connections in the brain, essentially resetting plasticity to a more youthful state (1) (2). If psilocybin has the same effect on the human brain, it could help counteract the structural changes that lead to cognitive decline. Furthermore, psilocybin has been shown to reduce negative mental states like chronic stress and rumination, which are known to accelerate the aging process (1).If you are interested in how psilocybin affects the body in other ways as we age, you might enjoy our article, Could Psilocybin Help with Inflammation in Older Adults?.

What Do We Know About Older Adults and Psychedelics?

Historically, older adults have been largely left out of modern psychedelic research, making up only about 1.4% of participants in clinical trials (1). However, recent observational studies are beginning to shed light on how older adults respond to these substances.

A 2024 prospective cohort study followed older adults (aged 60 and above) who participated in guided psychedelic group retreats (3). The researchers found that the older adults experienced significant improvements in their overall well-being, similar to a matched group of younger adults. Interestingly, the older adults reported that the acute "intensity" of the psychedelic experience was lower for them than for the younger participants. For the older group, the improvements in well-being were not predicted by how intense the "trip" was, but rather by the deep sense of interpersonal connection and "togetherness" they felt during the group activities (3).This suggests that for older adults, the social and relational aspects of psychedelic therapy may be just as important—if not more so—than the pharmacological effects of the drug itself.

Conclusion

The idea of using psychedelics to protect the aging brain is still in its early stages, but the UC Berkeley PLASTICITY study represents a major leap forward. By focusing on healthy older adults, researchers are shifting the conversation from merely treating illness to actively promoting lifelong mental flexibility, emotional health, and successful aging.

As we get older, it is completely normal to feel a mix of grief for the youth we are leaving behind and curiosity about how to make our later years as vibrant as possible. If you are an older adult reading about these new psychedelic therapies, you might be feeling a sense of hope, but also perhaps some confusion about how to safely explore these concepts. 

If you are interested in how these emerging therapies might relate to your own life transitions, or if you are looking for support in navigating the emotional complexities of aging, I would love to talk through this with you. Schedule a free consultation with Jeff Jones, LPC 

About the Author: 

This article was written by Jeff Jones, a Licensed Professional Counselor (LPC) in Texas in practice since 1999. He is a 2024 graduate of the CIIS Center for Psychedelic Therapies and Research program. With a compassionate and evidence-based approach, he helps clients navigate life's challenges and find a path toward healing. 

Disclaimer: 

The information in this article, including discussions of psychedelic-assisted psychotherapy, is for informational purposes only. Psychedelic-assisted psychotherapy has not been approved by all regulatory agencies in the United States, and its safety and efficacy are still being established. This content is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of your physician or other qualified health provider with any questions you may have regarding a medical condition.

References

1.Tripping into old age: Can psychedelics protect the aging brain?

2.Can Psychedelics Reboot Aging Brains? We’re About to Find Out

3.Effects of Psychedelics in Older Adults: A Prospective Cohort Study