David Alvear

What does years of meditation practice do to one’s mental health: Are there benefits? Perhaps also risks? What is still unknown? The therapeutic effects of structured mindfulness-based interventions have been studied extensively. What happens to mental health after years of practice, and as expertise develops, is much less clear, especially where practice turns difficult and aspects of meditative development and psychopathology can seemingly look alike. Considering these questions, I’m delighted to share our latest preprint: “A Systematic Review of Effects of Long-Term and Advanced Meditation on Mental Health: Psychiatric Symptoms, Stress, and Challenging Events” led by first author @TerjeSparby, with co-authors Jerron Chan, @OliverHugemark, and Vanessa Naughton. Following PRISMA guidelines, we synthesized 52 articles from 373 screened records. Three core themes emerged: 1️⃣ Reduction of Psychiatric Symptoms: Long-term and advanced meditators report significantly lower anxiety and depression than non-meditators or novices. Lifetime practice duration was a weak predictor of these effects, with some studies reporting no associations between years of practice and levels of symptoms, and some others reporting benefits within just weeks of starting regular practice. Particular cultivated qualities may help explain these outcomes, with bodily awareness and self-compassion linked to lower anxiety, and non-attachment to a modest antidepressant benefit. 2️⃣Stress Reduction and Relaxation: Long-term and advanced meditators reported lower levels of stress and exhibited associated physiological markers including faster cortisol recovery after an acute stressor. Mediation analyses revealed that acceptance-based emotion regulation accounted for some of these physiological changes. 3️⃣Occurrence of Adverse and Challenging Events: While most often linked to positive outcomes, long-term and advanced meditation has been associated with challenging or potentially negative outcomes in some cases. In a cross-sectional survey of 1,232 regular meditators, 25.6% reported at least some unpleasant experiences they believed related to their practice, such as anxiety, fear, and disorientation. What the scientific field still lacks is a method for distinguishing challenging experiences related to meditative development from those of clinical harm. Adverse event monitoring is largely absent, terminology is inconsistent across studies, and no established framework exists for guiding these important distinctions. We call for safety-centered study protocols, clear risk stratification criteria, and evidence-based clinical guidelines governing contraindications and appropriate practitioner support. Full PDF: osf.io/preprints/psyarxiv/zv… My deepest gratitude to Terje Sparby and our team, and to the practitioners and traditions whose experiences have made this research possible. I welcome reflections from scientists, clinicians, teachers, and practitioners, and others. How should we understand the positive and negative experiences associated with meditation? May this work benefit many 🙏 #contemplativescience #psychiatry #wellbeing #advancedmeditation #mentalhealth

How does meditation improve mental health? The answer may lie not in a single pathway, but in coordinated changes across the brain and body. I’m delighted to share our new review, “Multi-System Brain-Body Mechanisms of Mental Health in Long-Term Meditation: Toward a Science of Advanced Meditation.” Most research on meditation and mental health has focused on short-term interventions in novice populations. In this work, we synthesize evidence from 52 studies examining long-term and advanced meditation practice across neuroimaging, electrophysiology, physiology, and molecular measures to explore how sustained practice may shape mental health through multiple interconnected systems. 🧠🫀🧬 We identify six interrelated domains through which meditation may support mental health: --Well-being: cultivating positive emotions, equanimity, and life satisfaction --Interpersonal functioning: deepening compassion and connection while softening self–other boundaries --Emotion regulation: lowering emotional reactivity and supporting more adaptive responses --Sensory–affective uncoupling of pain: reducing pain's unpleasantness while sensory awareness remains intact --Stress resilience: speeding physiological recovery from stressors and lowering perceived stress --Psychiatric symptom prevention: reducing rumination and other markers of vulnerability to depression and anxiety Across these domains, meditation appears to involve adaptations at multiple levels: from large-scale brain networks involved in attention, self-processing, and emotion regulation, to physiological, endocrine, immune, cellular, and molecular systems. These findings suggest meditation is best understood not simply as a cognitive technique, but as a systemic brain-body adaptation. Notably, these effects did not scale linearly with practice duration, pointing to qualitative reorganization rather than accumulated hours. This may help move the science of meditation beyond symptom reduction alone, toward a broader investigation of human flourishing, resilience, and the potential of sustained mental training. I’m grateful to my wonderful collaborators Idil Sezer, Terje Sparby, Kamlesh Chalise, Vanessa Naughton. Full manuscript below ⤵️ May this work benefit many 🙏