Scientific Reports
July 1, 2024
Jonathan N. Davies, Anna Faschinger, Julieta Galante et al.
45 citations
Between 2002 and 2022, the use of meditation, yoga, and guided imagery or progressive relaxation among US adults rose significantly. By 2022, 18.3% (60.53 million) practiced meditation, 16.8% (55.78 million) practiced yoga, and 6.7% (22.22 million) used guided imagery or progressive relaxation. Growth was widespread across sociodemographic groups, but people of 'Other' race (54% Indigenous Americans) and those with moderate psychological distress were overrepresented across all practices. Individuals with severe distress were more likely to use meditation and guided imagery or progressive relaxation. Meditation use accelerated among adults aged 65 and older, those not accessing mental health care, and less educated groups, suggesting unmet health needs.
Clinical Psychological Science
January 6, 2025
Nicholas T. van Dam, Jessica Targett, Jonathan N. Davies et al.
14 citations
Meditation use in the United States is about as common as accessing mental health services, making it important to understand its potential harms. In a survey of 886 U.S. adults, nearly all (96.6%) reported an unusual experience related to meditation, 58.4% reported an adverse effect on a standard inventory, 78.3% endorsed at least one item on a scale of meditation-related adverse effects, 31.4% said they had a challenging, difficult, or distressing experience, and 9.1% reported functional impairment due to such effects. Psychological distress, psychoticism, unusual beliefs, and attending a meditation retreat were each linked to more unusual experiences and adverse effects. The authors recommend informing potential meditators about possible experiences, considering risk factors, and routinely monitoring for adverse effects.
June 23, 2023
Nicholas Bowles, Jonathan N. Davies, Sarah Strohmaier et al.
10 citations
preprint
Mindfulness meditation is widely practiced in religious and secular settings, with many studies suggesting benefits for psychosocial well-being. Yet little is known about dose-response effects—how often or how long one must practice to achieve specific goals. Recommended practice durations are becoming shorter, but the impact of this reduction on outcomes is unclear. This review critically appraises evidence from empirical studies, traditional sources, and contemporary teaching trends. It argues that previous studies' limited dose ranges and analytic approaches hinder understanding of dose-response. The authors propose a research agenda prioritizing dose-response questions, using designs optimized to examine how the relationship varies by outcome and individual, which could reconcile conflicting knowledge and tailor mindfulness offerings.
Mindfulness
June 1, 2024
Nicholas T. Dam, Jessica Targett, Alex Burger et al.
9 citations
A new questionnaire, the Inventory of Meditation Experiences (IME), captures a wide range of meditation-related experiences, from pleasant to unpleasant and mild to intense. Developed with data from 886 US meditators, the final 30-item scale has three factors and shows good statistical fit. The IME correlates as expected with measures of adverse effects, meditation habits, and mental health symptoms. The tool allows researchers to assess both the intensity and subjective valence of experiences separately or together, offering a more nuanced way to study the full spectrum of meditation-related psychological states.
May 13, 2024
Nicholas T. van Dam, Jessica Targett, Jonathan N. Davies et al.
2 citations
preprint
Meditation use is now as common as mental health service access. In a cross-sectional, population-based survey of 886 US adults, 96.6% reported an unusual experience related to meditation, 58.4% reported an adverse effect (AE), 78.3% endorsed at least one item on the Meditation-related AEs Scale, 31.4% reported a challenging, difficult, or distressing experience, and 9.1% reported functional impairment due to AEs. Psychological distress, psychoticism, unusual beliefs, and meditation retreat participation were positively associated with unusual experiences and AEs. The findings suggest that potential meditators should be informed about possible experiences, providers should consider risk factors, and AEs should be routinely and actively monitored.
June 25, 2026
Nicholas Bowles, Nicholas T. van Dam, Jonathan N. Davies et al.
preprint
Among 716 meditation-naïve healthy adults randomly assigned to 4, 10, 20, or 30 minutes of daily mindfulness meditation over 28 days, all groups showed significant improvements in wellbeing and mental health symptoms from baseline to post-intervention. No evidence of a dose–response effect emerged: longer assigned practice durations were not more beneficial than shorter ones. Adherence declined with longer assignments; 70.9% of the 10-minute group completed at least two-thirds of sessions versus 48.5% of the 30-minute group. Exploratory analyses indicated that actual practice engagement and confidence in meditation's efficacy predicted better outcomes, suggesting that adherence and expectancy may matter more than prescribed length.
Scientific Reports
May 19, 2026
Karin Matko, Cate Bailey, Julieta Galante et al.
Seventy percent of adults in Australia and New Zealand engaged in contemplative practices such as meditation, yoga, or breathing techniques in the past year, most commonly meditation (31%). Practitioners reported higher psychological distress and greater use of mental healthcare than non-practitioners. After adjusting for sociodemographic differences, the association with distress disappeared for yoga and relaxation practitioners but remained for breathing techniques, which were linked to increased distress in all models. Among those with unmet healthcare needs, meditators and relaxation practitioners reported less distress than non-practitioners with unmet needs. The findings suggest contemplative practices may serve as complements to mental healthcare, but their complex relationships with mental health require further study.
October 20, 2025
Karin Matko, Cate Bailey, Julieta Galante et al.
preprint
A nationally representative survey of 2,640 Australians and New Zealanders found that 70% had engaged in contemplative practices over the past year, most commonly meditation, relaxation, breathing techniques, and yoga. Users of these practices reported higher psychological distress and mental healthcare use than non-practitioners. After adjusting for socio-demographic differences, the association with distress disappeared for yoga and relaxation practitioners; for meditators it disappeared when accounting for mental healthcare use. Breathing practice remained linked to increased distress across all models. However, meditators and relaxation practitioners with unmet healthcare needs reported less distress than non-practitioners with unmet needs. The practices may play a complementary or alternative role in managing mental health.
September 16, 2025
Cate Bailey, Nicholas T. van Dam, Jonathan N. Davies et al.
preprint
A nationally representative Australian survey of 2,065 people found that meditators and other contemplative practitioners had lower unadjusted quality-of-life than non-practitioners, a difference that persisted after accounting for demographics but disappeared when mental health service use was considered. Unmet mental-health service need was highest among meditators (13.9%) versus non-practitioners (2.4%), and 8.9% of the overall sample had unmet need. The average annual cost of contemplative practices was $1,281 per person. The findings provide preliminary data for future cost-effectiveness evaluations of contemplative practices, with the EQ-HWB-9 index performing well as an outcome measure.
February 17, 2025
Nicholas Bowles, A. Bürger, Jonathan N. Davies et al.
A planned online mindfulness course for healthy adults aged 18–65 years will test whether longer daily meditation practice (10, 20, or 30 minutes) produces greater improvements in well-being and other psychological outcomes than a short control practice (4 minutes). The study aims to enroll at least 688 participants, but recruitment has been slow and affected by fraudulent entries; by the end of 2024 only 70 eligible participants had enrolled. The trial will measure well-being, distress, anxiety, depression, and other factors at several time points, with results expected by March 2026.