Meditation is widely promoted as a path to calm, clarity, and emotional resilience. But a growing body of research is documenting something the wellness industry rarely discusses: for a meaningful percentage of practitioners, meditation can trigger serious adverse effects including panic attacks, dissociative episodes, intrusive traumatic memories, and even psychotic symptoms.
What the Research Shows
A 2025 study published in a leading psychology journal found that approximately 8 to 10 percent of regular meditators experience clinically significant adverse effects. These are not mild discomforts like restlessness or boredom during a session — they include full-blown panic attacks, feelings of depersonalization (the sense that you are not real or are disconnected from your body), flashbacks to traumatic events, and in rare cases, episodes of psychosis.
The research, which drew on surveys and clinical interviews with hundreds of meditators across multiple countries, found that adverse effects were more common among people who practiced for longer durations, attended intensive retreats, or had pre-existing mental health conditions — particularly trauma histories, anxiety disorders, and depression.
Why Meditation Can Go Wrong
The mechanisms behind meditation-related adverse effects are still being studied, but researchers have identified several contributing factors. Meditation techniques that involve sustained attention on internal experiences can amplify emotional states that practitioners are not equipped to process. For someone with unresolved trauma, turning inward without proper support can surface overwhelming memories and sensations.
Certain practices appear to carry higher risk than others. Extended silent retreats, body-scanning meditations, and techniques that deliberately dissolve the sense of self (common in advanced Buddhist practices) have been associated with more frequent adverse reports. Shorter, guided mindfulness exercises — such as those used in app-based meditation programs — tend to carry lower risk, though they are not risk-free.
The Gap Between Marketing and Reality
Part of the problem is the way meditation is marketed. Apps, studios, and wellness brands typically present meditation as universally beneficial and essentially harmless. Terms like “stress relief” and “mental clarity” dominate the messaging, while screening for contraindications is rare. Most meditation teachers are not trained to recognize or respond to adverse psychological reactions.
This stands in contrast to the neuroscience research on advanced meditation, which acknowledges that deep practice can produce profoundly altered states of consciousness — states that are not inherently negative but that require appropriate context and support.
How to Practice Safely
Researchers are not arguing that people should stop meditating. The evidence for meditation’s benefits — including reduced anxiety, improved focus, and better emotional regulation — remains strong. But they are calling for a more honest and nuanced conversation about risk, especially for vulnerable populations.
Here are the key safety recommendations emerging from the research:
Start with short sessions. Research suggests that even brief mindfulness sessions can produce meaningful benefits. There is no need to dive into hours-long silent practice as a beginner.
Disclose mental health history to your teacher. If you have a history of trauma, PTSD, anxiety, depression, or psychotic episodes, let your meditation teacher know. A qualified instructor can modify practices or suggest alternatives.
Choose guided over unguided practice when starting out. Having a voice to anchor your attention can prevent the kind of unstructured internal exploration that sometimes triggers distress.
Be cautious with intensive retreats. Multi-day silent retreats represent the highest-risk meditation environment. If you are new to meditation or have mental health vulnerabilities, approach retreats cautiously and ensure the retreat center has protocols for supporting practitioners in distress.Know when to stop. If you experience panic, dissociation, or overwhelming distress during meditation, stop the practice and seek professional support. Pushing through adverse reactions is not “part of the process” — it is a sign that the practice needs to be adjusted or paused.
What This Means for Yoga Teachers
For yoga teachers who incorporate meditation and breathwork into their classes, this research is a call to take adverse effects seriously. Consider adding brief intake questions about mental health history, learning to recognize signs of dissociation or panic in students, and creating a culture where students feel safe to stop a practice without judgment.
The yoga teaching profession is increasingly being asked to meet clinical standards of care. Understanding the risks as well as the benefits of contemplative practices is an essential part of that evolution.
