Effects of forest therapy on human physical and mental health: A meta-analysis

BackgroundWith urbanization and residential space expansion, ecological environment and human health issues have become hot social topics. Forest health, as a way of seeking health in nature, has begun to receive public attention in the context of the gradually increasing sub-healthy population and...

Full description

Bibliographic Details
Main Authors: Guangmei DUAN, Liwei FAN, Wanning BU, Jiaxin LYU, Yan CAI
Format: Article
Language:English
Published: Editorial Committee of Journal of Environmental and Occupational Medicine 2024-02-01
Series:环境与职业医学
Subjects:
Online Access:http://www.jeom.org/article/cn/10.11836/JEOM23154
_version_ 1797271338359980032
author Guangmei DUAN
Liwei FAN
Wanning BU
Jiaxin LYU
Yan CAI
author_facet Guangmei DUAN
Liwei FAN
Wanning BU
Jiaxin LYU
Yan CAI
author_sort Guangmei DUAN
collection DOAJ
description BackgroundWith urbanization and residential space expansion, ecological environment and human health issues have become hot social topics. Forest health, as a way of seeking health in nature, has begun to receive public attention in the context of the gradually increasing sub-healthy population and various psychological and physical diseases at a young age.ObjectiveTo systematically evaluate the effects of forest therapy on selected physical and mental health indicators.MethodsRelevant research literature was retrieved from domestic and international databases (China National Knowledge Infrastructure, Wanfang Database, China Biomedical Literature Service System, Web of Science, ScienceDirect, PubMed, Embase, and Cochrane Library), with a time range from database establishment to January 31, 2023. Relevant data were extracted for meta-analysis to explore the relationship between forest therapy and selected psychological and physiological indicators.ResultsA total of 85 articles were included, and the meta-analysis results showed that better scores of Profile of Mood States, Positive and Negative Affect Scale, Beck Depression Inventory, and State Trait Anxiety Scale were found in the forest group than those in the urban group (P<0.05); the levels of systolic blood pressure, diastolic blood pressure, heart rate, sympathetic nerve indicator [ln (LF/HF)], salivary cortisol, and serum inflammatory factors were lower in the forest group than in the urban group, while parasympathetic nerve indicator [ln (HF)] level was higher in the forest group than in the urban group (P<0.05). The results of subgroup analysis showed that the changes in heart rate (SMD=−1.62, 95%CI: −2.41, −0.82), ln (HF) (SMD=1.29, 95%CI: 0.73, 1.85), ln (LF/HF) (SMD=−1.49, 95%CI: −2.13, −0.86), and salivary cortisol (SMD=−0.53, 95%CI: −0.81, −0.25) were more significant when the duration of forest therapy was ≤ 0.5 h, the recovery effect on emotional state was better in the >0.5~3 h group (such as tension SMD=−2.40, 95%CI: −3.21, 1.59), and the reduction effects on systolic blood pressure (SMD=−0.53, 95%CI: −1.03, −0.03) and diastolic blood pressure (SMD=−0.42, 95%CI: −0.88, 0.04) were better in the >3 h group. Seated meditation showed better recovery effects on multiple indicators of Profile of Mood States (such as fatigue SMD=−2.26, 95%CI: −3.07, −1.45), while walking showed better recovery effects on physiological indicators such as blood pressure (systolic blood pressure SMD=−0.57, 95%CI: −1.07, −0.06; diastolic blood pressure SMD=−0.72, 95%CI: −1.36, −0.07) and heart rate (SMD=−1.51, 95%CI: −2.38, -0.64). Except for blood pressure, the health benefits of forest therapy in the younger age group were generally better than those in the middle-aged and elderly group.ConclusionRelaxed and comfortable psychological feeling is reported when practicing forest therapy; it can lower blood pressure and heart rate, regulate the autonomic nervous system; it can also reduce the release of stress hormones and lower serum levels of inflammatory factors, exerting an auxiliary recovery effect on cardiovascular and immune system disorders. At the same time, the therapy duration, form, and age of the subjects have a certain impact on the effects of forest therapy practice.
first_indexed 2024-03-07T14:01:17Z
format Article
id doaj.art-9ab4bf837f6c471f9709731e3621f9fb
institution Directory Open Access Journal
issn 2095-9982
language English
last_indexed 2024-03-07T14:01:17Z
publishDate 2024-02-01
publisher Editorial Committee of Journal of Environmental and Occupational Medicine
record_format Article
series 环境与职业医学
spelling doaj.art-9ab4bf837f6c471f9709731e3621f9fb2024-03-07T05:27:39ZengEditorial Committee of Journal of Environmental and Occupational Medicine环境与职业医学2095-99822024-02-0141217518310.11836/JEOM2315423154Effects of forest therapy on human physical and mental health: A meta-analysisGuangmei DUAN0Liwei FAN1Wanning BU2Jiaxin LYU3Yan CAI4College of Forestry and Grassland, Jilin Agricultural University, Changchun, Jilin 130118, ChinaCollege of Forestry and Grassland, Jilin Agricultural University, Changchun, Jilin 130118, ChinaCollege of Forestry and Grassland, Jilin Agricultural University, Changchun, Jilin 130118, ChinaCollege of Forestry and Grassland, Jilin Agricultural University, Changchun, Jilin 130118, ChinaCollege of Forestry and Grassland, Jilin Agricultural University, Changchun, Jilin 130118, ChinaBackgroundWith urbanization and residential space expansion, ecological environment and human health issues have become hot social topics. Forest health, as a way of seeking health in nature, has begun to receive public attention in the context of the gradually increasing sub-healthy population and various psychological and physical diseases at a young age.ObjectiveTo systematically evaluate the effects of forest therapy on selected physical and mental health indicators.MethodsRelevant research literature was retrieved from domestic and international databases (China National Knowledge Infrastructure, Wanfang Database, China Biomedical Literature Service System, Web of Science, ScienceDirect, PubMed, Embase, and Cochrane Library), with a time range from database establishment to January 31, 2023. Relevant data were extracted for meta-analysis to explore the relationship between forest therapy and selected psychological and physiological indicators.ResultsA total of 85 articles were included, and the meta-analysis results showed that better scores of Profile of Mood States, Positive and Negative Affect Scale, Beck Depression Inventory, and State Trait Anxiety Scale were found in the forest group than those in the urban group (P<0.05); the levels of systolic blood pressure, diastolic blood pressure, heart rate, sympathetic nerve indicator [ln (LF/HF)], salivary cortisol, and serum inflammatory factors were lower in the forest group than in the urban group, while parasympathetic nerve indicator [ln (HF)] level was higher in the forest group than in the urban group (P<0.05). The results of subgroup analysis showed that the changes in heart rate (SMD=−1.62, 95%CI: −2.41, −0.82), ln (HF) (SMD=1.29, 95%CI: 0.73, 1.85), ln (LF/HF) (SMD=−1.49, 95%CI: −2.13, −0.86), and salivary cortisol (SMD=−0.53, 95%CI: −0.81, −0.25) were more significant when the duration of forest therapy was ≤ 0.5 h, the recovery effect on emotional state was better in the >0.5~3 h group (such as tension SMD=−2.40, 95%CI: −3.21, 1.59), and the reduction effects on systolic blood pressure (SMD=−0.53, 95%CI: −1.03, −0.03) and diastolic blood pressure (SMD=−0.42, 95%CI: −0.88, 0.04) were better in the >3 h group. Seated meditation showed better recovery effects on multiple indicators of Profile of Mood States (such as fatigue SMD=−2.26, 95%CI: −3.07, −1.45), while walking showed better recovery effects on physiological indicators such as blood pressure (systolic blood pressure SMD=−0.57, 95%CI: −1.07, −0.06; diastolic blood pressure SMD=−0.72, 95%CI: −1.36, −0.07) and heart rate (SMD=−1.51, 95%CI: −2.38, -0.64). Except for blood pressure, the health benefits of forest therapy in the younger age group were generally better than those in the middle-aged and elderly group.ConclusionRelaxed and comfortable psychological feeling is reported when practicing forest therapy; it can lower blood pressure and heart rate, regulate the autonomic nervous system; it can also reduce the release of stress hormones and lower serum levels of inflammatory factors, exerting an auxiliary recovery effect on cardiovascular and immune system disorders. At the same time, the therapy duration, form, and age of the subjects have a certain impact on the effects of forest therapy practice.http://www.jeom.org/article/cn/10.11836/JEOM23154forest therapymental healthphysical healthmeta-analysis
spellingShingle Guangmei DUAN
Liwei FAN
Wanning BU
Jiaxin LYU
Yan CAI
Effects of forest therapy on human physical and mental health: A meta-analysis
环境与职业医学
forest therapy
mental health
physical health
meta-analysis
title Effects of forest therapy on human physical and mental health: A meta-analysis
title_full Effects of forest therapy on human physical and mental health: A meta-analysis
title_fullStr Effects of forest therapy on human physical and mental health: A meta-analysis
title_full_unstemmed Effects of forest therapy on human physical and mental health: A meta-analysis
title_short Effects of forest therapy on human physical and mental health: A meta-analysis
title_sort effects of forest therapy on human physical and mental health a meta analysis
topic forest therapy
mental health
physical health
meta-analysis
url http://www.jeom.org/article/cn/10.11836/JEOM23154
work_keys_str_mv AT guangmeiduan effectsofforesttherapyonhumanphysicalandmentalhealthametaanalysis
AT liweifan effectsofforesttherapyonhumanphysicalandmentalhealthametaanalysis
AT wanningbu effectsofforesttherapyonhumanphysicalandmentalhealthametaanalysis
AT jiaxinlyu effectsofforesttherapyonhumanphysicalandmentalhealthametaanalysis
AT yancai effectsofforesttherapyonhumanphysicalandmentalhealthametaanalysis