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The effect of green cardamom on blood pressure and inflammatory markers among patients with metabolic syndrome and related disorders: A systematic review and meta-analysis of randomized clinical trials.

  • 2022-09-30
  • Phytotherapy research : PTR 37(2)
    • Bahareh Izadi
    • Hassan Joulaei
    • Kamran Bagheri Lankarani
    • Reza Tabrizi
    • Erfan Taherifard
    • Ali Sadeghpour
    • Mohebat Vali
    • Maryam Akbari

Study Design

Type
Meta-Analysis
Sample size
n = 595
Population
patients with metabolic syndrome and its related disorders
Methods
systematic review; searched PubMed/Medline, Scopus, EMBASE, Web of Science, and Cochrane Library for randomized clinical trials; pooled data using random-effects model
Research shows that herbal spices, including seeds of Elettaria cardamomum, may exert beneficial effects on unhealthy metabolic status. This study is a systematic review of the effect of green cardamom in patients with metabolic syndrome and its related disorders. PubMed/Medline, Scopus, EMBASE, Web of Science, and Cochrane Library were searched to identify the relevant randomized clinical trials. The data were pooled using the random-effects model, and weighted mean difference (WMD) was considered as summary effect size. Of 625 clinical trials, eight reports with 595 patients (299 in intervention group and 296 in control group) were included. The findings indicated that green cardamom significantly decreased diastolic blood pressure (WMD: -0.91 mmHg, 95%CI; -1.19, -0.62), high-sensitivity C-reactive protein (WMD: -1.21 mg/L, 95%CI; -2.18, -0.24), interleukin 6 levels (WMD: -2.41 ng/L, 95%CI; -4.35, -0.47). However, cardamom supplementation did not significantly affect systolic blood pressure. This meta-analysis demonstrated that green cardamom could improve blood pressure control and exert antiinflammatory effects which could help patients with unhealthy metabolic profile better manage their health. Importantly, there were few eligible randomized trials with quite a low number of participants. Further prospective studies on larger sample sizes and longer duration of supplementation are warranted for its widespread use.

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