Do Pets Really Boost Our Wellbeing? What the Research Says

Many people assume that living with a dog or cat is good for them. Owners often describe their animals as family, and the idea that companionship lifts mood and health is widespread. Science has tested that idea many times, and the answer is more nuanced than the popular version.

A mixed picture

A systematic review covering 116 peer-reviewed studies on pet attachment and wellbeing found that results vary. Some research links pet ownership to better mental health, other work links it to worse outcomes, and some finds no difference between owners and non-owners. The reviewers suggested one reason: most studies look at whether someone owns a pet, not at how close the relationship is. Qualitative work in the same review found that many owners felt their pets supported them through comfort, social contact, and a sense of self-worth.

Heart and brain findings

Some physical-health evidence is more consistent. Harvard Health reports that having a pet appears to lower the risk of high blood pressure and may help people with the condition control it. The proposed explanation is indirect: pets may encourage calmer feelings and habits such as daily walks, which can support heart health.

Cognitive research has produced eye-catching results. One cross-sectional study of adults across the lifespan reported that pet ownership was linked to better brain measures, and that owning a pet could reduce brain age by up to 15 years. Those headline numbers deserve caution. The sample was small, with 95 participants aged 20 to 74, and a cross-sectional design cannot show that pets caused the differences.

The case against easy assumptions

A more recent study of renters in one Australian state reported a different outcome. Getting a pet did not make these renters healthier, less lonely, or more satisfied with life, according to the report on that work, which was published in Applied Research in Quality of Life. The researchers concluded that acquiring a pet is unlikely to be an effective strategy for improving health or reducing loneliness. That does not erase the comfort many owners feel, but it shows that affection does not automatically translate into broad health gains.

Why the bond may matter

Attachment quality appears to be a key variable. Research summarized in a 2024 preprint found that feeling secure in a pet relationship was associated with lower psychological distress and fewer depressive symptoms. Anxiety within the pet bond, by contrast, was linked to poorer wellbeing, while avoidance was not clearly related. In other words, a warm, stable relationship may matter more than simply having an animal at home.

The timing problem

Researchers still do not know which way the arrow points. A 2024 editorial on pets for adults with long-term health conditions noted that whether pets improve wellbeing, or whether healthier, better-resourced people are more likely to keep pets, will remain unresolved until longitudinal studies follow people over time. Social circumstances, housing, and health all shape both owners and animals.

What this means for readers

The evidence suggests pets can add meaningful companionship and routine for many people, but they are not a guaranteed cure for stress, loneliness, or illness. Anyone considering a pet, or wondering how an animal affects their own health, should weigh personal circumstances, the realistic costs of care, and the needs of the animal. For individual health decisions, a physician or veterinarian is the right person to ask.