A popular 2025 study found that psilocybin (the psychedelic in magic mushrooms) extended the lifespan of aged mice and improved their survival compared to untreated animals. The finding received significant media coverage and was even presented by some outlets as a tool for human longevity.
But, despite wide interest in medicinal psychedelics, the evidence comes with the need for further research to be definitive. There are, however, other interesting pieces of research that give us promising information about magic mushrooms.
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How Human Data Shows Something Different
After that mouse study, which drew so much attention, a researcher tested this longevity claim outside of the lab.
He looked at data that already existed in the real world by compiling records of people who died between 2010 and 2025. He compared two groups: 11 well-known figures with documented personal use of psychedelics and 17 prominent cancer and aging researchers.
Two rules were used to make the comparison fair:
- Anyone who died before age 60 was left out, so the results wouldn’t be skewed by early deaths from accidents or unrelated illness, since those have nothing to do with whether psychedelics impact aging.
- Rather than comparing everyone to a single generic life expectancy number, each person was compared to a benchmark specific to their birth year: conditional life expectancy at age 40. That means, for someone born in a given year who already made it to 40, how long does the average person from that same generation typically go on to live?
For reference, that benchmark came out to roughly 73 to 76 years, depending on birth year.
Each group lived well beyond that average. That isn’t surprising; highly educated professionals with easy access to healthcare may outlive much of society, regardless of personal habits.
But the psychedelic-associated group did not outlive the biomedical researchers.
This doesn’t disprove the biology seen in the study with mice. Instead, it acts as a sort of warning that anti-aging medicine in humans should not be concluded from studies of mice. Conclusions about anti-aging effects in people will require careful, controlled research.
What Psilocybin Has Also Been Seen to Accomplish
Across the available research, psilocybin appears to act on several systems in the body that tend to decline or destabilize with age.
Gut Bacteria Become More Diverse
A master’s thesis from ASU looked at how psilocybin impacts the gut microbiome (the trillions of bacteria living in the digestive system) in aging mice. Researchers gave these mice either psilocybin or a saline placebo, then analyzed their stool to see which bacteria were present.
The psilocybin-treated mice ended up with more types of bacteria living in better balance, often referred to as having greater “diversity.”
One major “family” of bacteria, called Firmicutes, lessened, while another group, called Verrucomicrobiota, increased. This is interesting because the increased group contains bacteria that are often associated with a healthier gut lining and lower inflammation.
Aging usually pushes the gut microbiome in the opposite direction. As people and animals get older, gut bacteria tend to become less diverse and shift toward types associated with inflammation.
In this study, psilocybin nudged the gut back toward a microbiome that looked more like a younger, healthier gut.
Inflammation Calms
Getting older is often accompanied by a low-level, constant state of inflammation in the body. This background inflammation is linked to depression, Alzheimer’s disease, Parkinson’s disease, and general frailty.
Psilocybin, through a substance it turns into in the body called psilocin, appears to interact with cells associated with this inflammation.
Scientists tested psilocybin in two ways:
- In a lab dish with immune cells, it calmed down some of the signals that cause inflammation
- In actual people who took a real dose, researchers checked their blood afterward for signs of inflammation.
They looked at three blood markers—TNF alpha, IL-6, and CRP—which essentially express how inflamed the body is at the moment.
After one dose of psilocybin, TNF alpha tended to go down for a bit. But IL-6 and CRP didn’t behave the same way every time; sometimes they dropped, sometimes they didn’t.
The Brain Stays More Flexible
One of the hallmarks of an aging brain is reduced plasticity, meaning brain cells become less able to form new connections.
Psilocybin appears to support a protein called BDNF and a related signaling pathway (TrkB) that help brain cells grow and adapt. This process, called neuroplasticity, shows up as brain cells growing new connections to each other. Particularly in areas of the brain tied to memory and mood that tend to shrink and stiffen as people get older.
This is considered one of the leading explanations for why psilocybin has antidepressant effects, and it is especially relevant in older age, when this kind of brain flexibility naturally declines.
Mood and Emotion Activity Decrease
Brain scans show psilocybin changes activity in a group of brain regions linked to inward, repetitive thinking. Referred to as the default mode network, it tends to be overactive in depression and works differently in aging and dementia.
Quieting it down may help explain why psilocybin can ease the kind of looping negative thoughts common in late-life depression.
It May Have Fewer Interactions with Medications
Older adults often take several medications at once, which raises the risk of drug interactions.
Psilocybin is broken down by the body mostly through a process that doesn’t rely heavily on the liver enzyme system responsible for many drug interactions, and it clears the body fairly quickly. The combination of short duration plus a lower interaction risk might be a reason to consider it a practical option for older patients already managing multiple prescriptions.
What This Could Mean for Healthy Aging
While none of these point to psilocybin as an anti-aging drug, the research does suggest that it appears to influence several systems within the body that become less resilient with age.
A healthier, more diverse gut microbiome can help support digestion and the integrity of the gut lining, which tend to decline over time and contribute to chronic inflammation. The less inflammation in the body, the lower the risk of age-related problems, such as Alzheimers disease and arthritis.
In the brain, maintaining neuroplasticity allows neurons to continue forming new connections. This is significant for aging as it supports learning and memory, which become harder later in life. The mood improvement is another check mark in the pro column for the impact of psilocybin on the brain’s aging. Depression is common in older adults and is associated with many negative side effects, such as faster cognitive decline, reduced physical activity, and lower overall health. These can increase the rate and risk of mortality, so the impact of psilocybin on mood may be one of the most important.
Regardless of psilocybin’s direct impact on aging, it might contribute to functions of the body which play a major role in how we age/
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As with anything you read on the internet, this article should not be construed as medical advice; please talk to your doctor or primary care provider before changing your wellness routine. WHN neither agrees nor disagrees with any of the materials posted. This article is not intended to provide a medical diagnosis, recommendation, treatment, or endorsement. Additionally, it is not intended to malign any religion, ethnic group, club, organization, company, individual, or anyone or anything. These statements have not been evaluated by the Food and Drug Administration.
