Adverse Effects of Meditation: A Preliminary Investigation of Long-Term Meditators

This pioneering study asked a surprisingly neglected question: can meditation actually mess you up? Researchers surveyed 27 seasoned Vipassana meditators (averaging over four years of practice) at an intensive retreat in Massachusetts. The answer was a striking yes for many -- nearly 63% reported at least one negative effect, including heightened anxiety, emotional pain, and feelings of disorientation. About 7% found the effects so destabilizing they quit meditating entirely. Here is the real kicker: more experience did not help. The most veteran meditators actually reported the highest rate of adverse effects (75%). That said, participants still rated the positives as significantly outweighing the negatives. The study is especially important for psi research that uses meditation-based protocols, since it shows meditation is not a uniformly gentle practice. It built on earlier findings from Transcendental Meditation and extended them into the Vipassana tradition.