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Schakel L, Veldhuijzen DS, Crompvoets PI, Bosch JA, Cohen S, van Middendorp H, Joosten SA, Ottenhoff TH, Visser LG, Evers AW. Effectiveness of Stress-Reducing Interventions on the Response to Challenges to the Immune System: A Meta-Analytic Review. PSYCHOTHERAPY AND PSYCHOSOMATICS 2019; 88:274-286. [PMID: 31387109 PMCID: PMC6878733 DOI: 10.1159/000501645] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/12/2019] [Accepted: 06/21/2019] [Indexed: 01/17/2023]
Abstract
BACKGROUND There is consistent evidence showing an interplay between psychological processes and immune function in health and disease processes. OBJECTIVES The present systematic review and meta-analysis aims to provide a concise overview of the effectiveness of stress-reducing psychological interventions on the activation of immune responses in both healthy subjects and patients. METHODS Included are 3 types of challenges: in vivo, in vitro, and psychophysiological. Such challenges are designed to mimic naturally occurring immune-related threats. RESULTS A systematic literature search was conducted using PubMed, EMBASE, and PsychInfo, resulting in 75 eligible studies. The risk of bias was assessed with the Cochrane risk-of-bias tool. Across all studies, a small-to-medium effect size was found for the effects of psychological interventions on optimization of the immune function (g = 0.33; 95% CI 0.22-0.43). While the largest effects were found for in vivo immune-related challenges (g = 0.61; 95% CI 0.34-0.88; especially on studies that incorporated skin tests and wound healing), studies incorporating psychophysiological challenges and in vitro immune-related stimulations similarly suggest more optimal immune responses among those receiving stress-reducing interventions (g = 0.28; 95% CI 0.15-0.42). CONCLUSION These findings showed substantial heterogeneity depending on the type of challenge, the study populations, and the intervention types. These data demonstrate support for the effectiveness of stress-reducing psychological interventions in improving immunity in studies that tested immune function by means of incorporating an in vivo,in vitro, or psychophysiological challenge. Future research should more consistently incorporate challenges into the study design to gather more insights in the mechanisms underlying the optimized immune function following a psychological intervention. This is also relevant for clinical practice, as psychological interventions can possibly supplement, or at least partially replace, current drug treatments in various somatic conditions to reduce side effects.
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Affiliation(s)
- Lemmy Schakel
- Health, Medical and Neuropsychology Unit, Leiden University, Leiden, The Netherlands, .,Leiden Institute for Brain and Cognition, Leiden University, Leiden, The Netherlands,
| | - Dieuwke S. Veldhuijzen
- Health, Medical and Neuropsychology Unit, Leiden University, Leiden, The Netherlands,Leiden Institute for Brain and Cognition, Leiden University, Leiden, The Netherlands
| | - Paige I. Crompvoets
- Health, Medical and Neuropsychology Unit, Leiden University, Leiden, The Netherlands
| | - Jos A. Bosch
- Department of Clinical Psychology, University of Amsterdam, Amsterdam, The Netherlands
| | - Sheldon Cohen
- Department of Psychology, Carnegie Mellon University, Pittsburgh, Pennsylvania, USA
| | - Henriët van Middendorp
- Health, Medical and Neuropsychology Unit, Leiden University, Leiden, The Netherlands,Leiden Institute for Brain and Cognition, Leiden University, Leiden, The Netherlands
| | - Simone A. Joosten
- Department of Infectious Diseases, Leiden University Medical Centre, Leiden, The Netherlands
| | - Tom H.M. Ottenhoff
- Department of Infectious Diseases, Leiden University Medical Centre, Leiden, The Netherlands
| | - Leo G. Visser
- Department of Infectious Diseases, Leiden University Medical Centre, Leiden, The Netherlands
| | - Andrea W.M. Evers
- Health, Medical and Neuropsychology Unit, Leiden University, Leiden, The Netherlands,Leiden Institute for Brain and Cognition, Leiden University, Leiden, The Netherlands,Department of Psychiatry, Leiden University Medical Centre, Leiden, The Netherlands
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DIMENT BETHANYC, FORTES MATTHEWB, EDWARDS JASONP, HANSTOCK HELENG, WARD MARKD, DUNSTALL HUWM, FRIEDMANN PETERS, WALSH NEILP. Exercise Intensity and Duration Effects on In Vivo Immunity. Med Sci Sports Exerc 2015; 47:1390-8. [DOI: 10.1249/mss.0000000000000562] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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