Essential oils for treating anxiety: a systematic review of randomized controlled trials and network meta-analysis

作者：Ling Tan, Fei-fei Liao, Linzi Long, Xiaochang Ma, Yuxuan Peng, Jieming Lu, Hua Qu, Changgeng Fu · 发表于：Frontiers in Public Health · 年份：2023 · DOI：10.3389/fpubh.2023.1144404 · 被引用次数：29 · 研究领域：Essential Oils and Antimicrobial Activity、Medicinal Plant Extracts Effects、Olfactory and Sensory Function Studies

Background and purpose The findings of clinical studies exploring essential oils (EOs) for anxiety remain disputed, and no studies have yet clarified the differences in the efficacy of EOs. The purpose of the study was to directly or indirectly compare the efficacy of different types of EOs on anxiety by pooling the results of randomized controlled trials (RCTs). Methods PubMed, Cochrane Library, Embase, Scopus, Web of Science and the Cochrane Central Register of Controlled Trials (CENTRAL) databases were searched from inception to November 2022. Only full texts of RCTs that investigated the effects of EOs on anxiety were included. The trial data were extracted and the risk of bias was assessed by two reviewers independently. Pairwise meta-analysis and network meta-analysis were performed by Stata 15.1 or R 4.1.2 software. Results Forty-four RCTs (fifty study arms) involving 10 kinds of EOs and 3419 anxiety patients (1815 patients in EOs group and 1604 patients in control group) were included. Pairwise meta-analyses showed that EOs were effective in reducing State Anxiety Inventory scores (SAIS) [WMD = −6.63, 95% CI−8.17, −5.08] and Trait Anxiety Inventory scores (TAIS) [WMD = −4.97, 95% CI−6.73, −3.20]. Additionally, EOs could decrease systolic blood pressure (SBP) [WMD = −6.83, (95% CI −10.53, −3.12), P < 0.001] and heart rate (HR) [WMD = −3.43, (95% CI −5.51, −1.36), P < 0.001]. Network meta-analyses demonstrated that regarding the outcome of SAIS, Jasminum s...