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Home SCIENCE NEWS Biology

How service dogs reduce PTSD symptoms: factors and mechanisms

July 27, 2022
in Biology
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A new analysis dives into the use of service dogs by U.S. veterans who have posttraumatic stress disorder (PTSD), illuminating factors and mechanisms that may underlie the mental health effects of these relationships. Clare Jensen of Purdue University, Indiana, U.S.A., and colleagues present these findings in the open-access journal PLOS ONE on July 27, 2022.

Veteran with Service Dog.

Credit: K9s For Warriors, CC-BY 4.0 (https://creativecommons.org/licenses/by/4.0/)

A new analysis dives into the use of service dogs by U.S. veterans who have posttraumatic stress disorder (PTSD), illuminating factors and mechanisms that may underlie the mental health effects of these relationships. Clare Jensen of Purdue University, Indiana, U.S.A., and colleagues present these findings in the open-access journal PLOS ONE on July 27, 2022.

Previous research suggests that pairing a veteran with a service dog is associated with lower severity of PTSD. However, the mechanisms underlying these potential benefits are unclear.

To improve understanding, Jensen and colleagues studied 82 military members or veterans and their service dogs, which had all been trained to alleviate PTSD symptoms. Shortly before the veterans and dogs were paired, and again after a three-month period together, the veterans completed a number of different surveys and allowed the researchers to make additional observations to capture a detailed view of veteran-dog interactions.

The researchers first analyzed results of surveys and records related to personal characteristics of the service dogs and veterans, and the closeness of their bond. They found that most of the dog characteristics evaluated were not associated with better or worse veteran mental health outcomes, except for lower dog excitability, which was linked to lower severity of PTSD symptoms and to a closer veteran-dog relationship.

Next, the researchers probed potential mechanisms underlying alleviation of mental health symptoms by analyzing the results of surveys and observations that captured dog behavior, training methods, and the use of specific trained tasks.

Better mental health was associated with a number of factors, including perception of the dog’s care as being easy and a closer veteran-dog relationship. The analysis also found a link between worse depression and more frequently asking service dogs to initiate the social greeting. Veterans who more frequently asked their dogs to alert them to a human approaching from behind were more likely to have greater anxiety but less severity of PTSD symptoms.

Further research will be needed to expand on these findings, potentially leading to better understanding of how to identify veterans who could benefit from service dogs and how to best select and train dogs.

Clare Jensen adds: “This study provides new information about how and why service dogs may improve mental health for some veterans with PTSD. We are especially grateful to the military veterans who made this possible by sharing their time and experiences with us.”

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In your coverage please use this URL to provide access to the freely available article in PLOS ONE: https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0269186

Citation: Jensen CL, Rodriguez KE, MacLean EL, Abdul Wahab AH, Sabbaghi A, O’Haire ME (2022) Characterizing veteran and PTSD service dog teams: Exploring potential mechanisms of symptom change and canine predictors of efficacy. PLoS ONE 17(7): e0269186. https://doi.org/10.1371/journal.pone.0269186

Author Countries: U.S.A.

Funding: This project was supported by grants awarded to Dr. O’Haire from the National Institutes of Health (#R21HD091896), Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD; https://www.nichd.nih.gov/) and National Center for Complementary and Integrative Health (NCCIH; https://www.nccih.nih.gov/), Merrick Pet Care (https://www.merrickpetcare.com/), Petco Love (https://petcolove.org/), and Dogtopia Foundation (https://www.dogtopiafoundation.org/). Funders played no role in the study design, data collection and analysis, decision to publish, or preparation of the manuscript.



Journal

PLoS ONE

DOI

10.1371/journal.pone.0269186

Method of Research

Observational study

Subject of Research

People

Article Title

Characterizing veteran and PTSD service dog teams: Exploring potential mechanisms of symptom change and canine predictors of efficacy

Article Publication Date

27-Jul-2022

COI Statement

Dr. O’Haire is a member of the Merrick Scientific Cabinet. The authors declare no other competing interests. This does not alter their adherence to PLOS ONE policies on sharing data and materials.

Tags: dogsfactorsmechanismsPTSDreduceServicesymptoms
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