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Relationship between Meditation and Waking Salivary Cortisol Secretion among Long-Term MBSR Instructors

Sara Wagner Robb, Alyson Haslam, Michael D. Wirth, Jennifer L. Gay, Lauren Middleton, Mike Healy, James R. Hebert

Complementary Medicine Research 2019 DOI: 10.1159/000493124 (opens in new tab)

Study at a glance

AI-extracted from the abstract
Characteristics Observational study Peer reviewed
Sample size 84
Population Long-term meditators with training in the Mindfulness-Based Stress Reduction (MBSR) program
Measures salivary waking cortisol, cortisol area under the curve (AUC) with respect to increased secretion above baseline (AUCI), cortisol AUC above ground (above zero, AUCG)
Topics Meditation
Key findings Individuals in the highest quartile of years meditating (>26 years) had statistically significantly elevated waking cortisol AUCG values compared with those in the lowest quartile (≤10 years), and the relationship was more pronounced among those waking at or before 6:30 a.m. The authors conclude that increasing years of meditation practice were related to a higher waking cortisol response and call for further exploration.

Abstract

Background: A potential relationship between long-term meditation practice and stress reduction remains virtually unexplored. The purpose of this study was to characterize stress using salivary waking cortisol in a group of long-term meditators with training in the Mindfulness-Based Stress Reduction (MBSR) program.

Materials and Methods: Four salivary cortisol samples were collected from meditators (n = 84) during the first hour of awakening. The waking cortisol rhythm was summarized using cortisol area under the curve (AUC) with respect to increased secretion above baseline (AUCI) and cortisol AUC above ground (above zero, AUCG); data on meditation duration and depth, perceived stress, and other covariates were collected via self-reported questionnaire.

Results: Individuals in the highest quartile of years meditating (> 26 years) had statistically significantly elevated AUCG values (p = 0.01) as compared to individuals in the lowest quartile of years meditating (≤10 years). This relationship was more pronounced among individuals waking at or before 6: 30 a.m.

Conclusions: Overall, an increasing number of years of meditation practice was related to a higher waking cortisol response. These intriguing findings warrant additional exploration, as the stress response can be complex.

Comparable studies

Other observational and cohort studies on meditation, most cited first.

Study Year Design Participants
Using Self-Report Assessment Methods to Explore Facets of Mindfulness Undergraduate students 2006 Observational cohort
Effectiveness of a meditation-based stress reduction program in the treatment of anxiety disorders Patients with generalized anxiety disorder or panic disorder with or without agoraphobia 1992 Observational cohort n = 22
Meditation experience is associated with increased cortical thickness Participants with extensive Insight meditation experience and matched controls 2005 Observational cohort n = 20
Meditation experience is associated with differences in default mode network activity and connectivity Experienced meditators and matched meditation-naive controls 2011 Observational cohort
Long-term meditators self-induce high-amplitude gamma synchrony during mental practice Long-term Buddhist practitioners and controls 2004 Observational cohort

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