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Effect of petting a dog on immune system function.
Carl J Charnetski1, Sandra Riggers, Francis X Brennan
1Department of Psychology, Wilkes University, Wilkes-Barre, PA 18766, USA. charnets@wilkes.edu
Psychological Reports
|March 15, 2005
Summary
Petting a live dog significantly boosted secretory immunoglobulin A (IgA) levels in college students. This finding highlights the potential immune-boosting benefits of human-animal interaction.
Area of Science:
- Psychoneuroimmunology
- Human-Animal Interaction
Background:
- The relationship between social interaction and immune function is an area of growing interest.
- Previous research suggests potential health benefits associated with interacting with animals.
Purpose of the Study:
- To investigate the impact of petting a live dog on secretory immunoglobulin A (IgA) levels.
- To compare the effects of interacting with a live dog, a stuffed dog, and resting on IgA levels.
Main Methods:
- 55 college students were randomly assigned to three groups: petting a live dog, petting a stuffed dog, or resting.
- Saliva samples were collected before and after an 18-minute intervention.
- Participants completed the Pet Attitude Scale.
Main Results:
- A significant increase in secretory immunoglobulin A (IgA) was observed only in the group that petted a live dog.
- Scores on the Pet Attitude Scale correlated with IgA increases in the stuffed dog group.
- No significant changes in IgA were found in the stuffed dog or resting groups.
Conclusions:
- Interacting with a live dog can positively influence immune markers, specifically secretory IgA.
- The findings suggest that the presence and interaction with live animals may have a tangible impact on physiological health.
- Further research is warranted to explore the mechanisms and broader implications of human-animal interactions on immunity.