Effect of kindness-based meditation on health and well-being: A systematic review and meta-analysis.

A systematic review and meta-analysis of 22 randomized controlled trials found that kindness-based meditation (loving-kindness and compassion meditation) moderately reduces self-reported depression and increases mindfulness, compassion, and self-compassion compared to passive control groups. Positive emotions also increased compared to progressive relaxation. However, results were inconclusive against active controls, and the evidence suffered from low to moderate methodological quality and imprecision due to small studies. Some people may initially find the practice challenging. Overall, kindness-based meditation shows benefits for well-being and social interaction, but larger, well-conducted trials are needed.

Study at a glance

Abstract

OBJECTIVE: Kindness-based meditation (KBM) is a rubric covering meditation techniques developed to elicit kindness in a conscious way. Some techniques, for example, loving-kindness meditation and compassion meditation, have been included in programs aimed at improving health and well-being. Our aim was to systematically review and meta-analyze the evidence available from randomized controlled trials (RCTs) comparing the effects of KBM on health and well-being against passive and active control groups in patients and the general population. METHOD: Searches were completed in March 2013. Two reviewers applied predetermined eligibility criteria (RCTs, peer-reviewed publications, theses or conference proceedings, adult participants, KBM interventions) and extracted the data. Meta-analyses used random-effects models. RESULTS: Twenty-two studies were included. KBM was moderately effective in decreasing self-reported depression (standard mean difference [Hedges's g] = -0.61, 95% confidence interval [CI] [-1.08, -0.14]) and increasing mindfulness (Hedges's g = 0.63, 95% CI [0.22, 1.05]), compassion (Hedges's g = 0.61, 95% CI [0.24, 0.99]) and self-compassion (Hedges's g = 0.45, 95% CI [0.15, 0.75]) against passive controls. Positive emotions were increased (Hedges's g = 0.42, 95% CI [0.10, 0.75]) against progressive relaxation. Exposure to KBM may initially be challenging for some people. RESULTS were inconclusive for some outcomes, in particular against active controls. The methodological quality of the reports was low to moderate. RESULTS suffered from imprecision due to wide CIs deriving from small studies. CONCLUSIONS: KBM showed evidence of benefits for the health of individuals and communities through its effects on well-being and social interaction. Further research including well-conducted large RCTs is warranted.