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Animal-assisted interventions improve depression in dementia, but not other outcomesAnimal interactions may help ease depression in people with dementia

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Key Takeaway
Consider animal-assisted interventions as an adjunct for depression in dementia, but not for other outcomes.

This publication is an overview of systematic reviews and meta-analyses examining animal-assisted interventions (AAIs) for people living with dementia. The review synthesized evidence on multiple outcomes, including depression, agitation, quality of life, cognition, and activities of daily living.

For depression, the authors report a significant improvement with AAIs, supported by moderate evidence. However, no significant improvements were found for agitation, quality of life, cognition, or activities of daily living. The authors emphasize that there is no sufficient evidence to substantiate positive effects on these other outcomes.

The review's limitations include a small number of studies, small sample sizes, and significant heterogeneity across studies. These factors reduce the certainty of the findings and limit the ability to draw firm conclusions.

In practice, clinicians may consider AAIs as a supportive intervention for depressive symptoms in dementia, but should not expect broad benefits across other domains. The evidence base remains limited, and further high-quality research is needed to clarify the role of AAIs in dementia care.

How this fits prior evidence

This overview confirms and extends prior coverage on non-pharmacological dementia care. It aligns with the finding that person-centered non-pharmacological interventions reduce verbal agitation, though AAIs did not show significant effects on agitation in this synthesis. It also complements prior coverage on pharmacological and metabolic risk factors by addressing a non-pharmacological, non-drug intervention. The moderate evidence for depression improvement adds a specific outcome to the broader non-pharmacological toolkit, but the lack of effect on other outcomes highlights the need for targeted interventions.

Living with dementia brings many challenges, and feelings of sadness or depression are common. For some families, finding ways to lift the mood of their loved ones is a top priority. A review of existing research looked at how animal-assisted interventions—which involve interacting with animals—impact those living with dementia.

The findings show that these interactions lead to significant improvements in symptoms of depression. While this is a positive sign for mental well-being, the evidence is currently limited by small study sizes and differences in how the programs were run. This means we have moderate confidence in the results regarding depression specifically.

It is important to note that while the interaction helped with depression, researchers did not find enough evidence to say it improves other areas like agitation, memory, or daily tasks. Because the current data comes from a small number of studies, these findings are a starting point for understanding how animal companionship can support mental health.

What this means for you:
Animal-assisted interactions show promise in reducing depression for people living with dementia.

Common questions

Can interacting with animals help someone with dementia feel less depressed?

Yes, the research shows significant improvement in depression for people living with dementia who participate in animal-assisted interventions. While the evidence is considered moderate because of small study sizes and variations in how programs were conducted, it suggests that these interactions can be a helpful way to support mental health.

Does spending time with animals improve memory or behavior in dementia?

The current research does not have enough evidence to say if animal-assisted interventions improve other areas like agitation, cognition, or the ability to perform daily activities. While it helps with depression, more study is needed to see if it impacts other symptoms of dementia.

Study Details

Study typeMeta analysis
EvidenceLevel 1
PublishedAug 2026
View Original Abstract ↓
AIMS: This overview aims to provide high-quality evidence synthesis of animal-assisted interventions (AAIs) among people living with dementia. BACKGROUND: Dementia has become the seventh leading cause of death in the world. Unfortunately, currently effective pharmacological interventions remain elusive. As a non-pharmacological treatment, AAI is gaining more attention while the effectiveness of AAI for people living with dementia remains unclear. METHODS: EMBASE, PubMed, Cochrane Library, CINAHL, CNKI, VIP, CBM and Wanfang databases were searched from inception to March 2026. The AMSTAR2 was used to assess the methodological quality of the included reviews. Meta-analysis was conducted using STATA 16 for the original studies identified from the included reviews. Evidence quality of main outcomes was assessed according to the Grading of Recommendations Assessment, Development, and Evaluation (GRADE) guidelines. RESULTS: Sixteen systematic reviews were included in the overview. A significant improvement was found in depression among dementia patients, but not in agitation, quality of life (QOL), cognition and activities of daily living (ADL). CONCLUSIONS: There is moderate evidence that AAI has positive effects on depression for people living with dementia. Despite searches, no sufficient evidence has been found to substantiate the positive effects of AAI on other outcomes in people living with dementia. Due to the small number of studies, small sample sizes and significant heterogeneity, more randomised controlled trials with large samples are needed.
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