In this article
It is raining, your dog is waiting by the door and the sofa has made a convincing offer. Then you remember a headline saying dog owners live longer. It is an appealing reward for finding your waterproofs. A large research review did report a link with longer survival, but its numbers need more explanation than that headline usually gets1.
The evidence on walking gives you something more useful to work with. Here is what the big studies found, why an association does not establish a cause, and how shared walks can contribute to an active week without making your dog responsible for your health.
Where the live-longer headline came from
A review published in Circulation: Cardiovascular Quality and Outcomes pooled ten studies covering 3,837,005 people. Dog ownership was associated with a 24% lower relative risk of death from any cause during follow-up. The authors also reported lower cardiovascular mortality, meaning deaths involving the heart and blood vessels1.
These were observational studies. People had not been randomly assigned a dog, and the pooled analysis did not adjust for potential confounders: other differences between owners and non-owners that might help explain their health outcomes. The authors named that limitation in their abstract1.
The distinction is practical. A relative difference between groups does not mean your own lifespan will increase by a quarter. Nor does it tell you what would happen if a particular person got a dog tomorrow. It is a reason to investigate a possible relationship.
What happened when researchers checked the numbers?
A later team revisited the analysis using the most fully adjusted estimates available from six general-population studies. Their pooled estimate was 0.95, with a confidence interval from 0.85 to 1.05. Because that range includes 1, the result was not statistically clear evidence of lower mortality2.
That does not establish that a dog can never affect someone's health. It shows why combining millions of people does not, by itself, settle the question. How the original studies were designed, which estimates are combined and what differences are accounted for all matter2.
For a reader, the useful habit is to pause at the phrase 'linked with'. Ask whether the study compared otherwise similar people, whether it measured who actually cared for or walked the dog, and whether it followed a change over time. A confident headline can conceal quite different answers to those questions.
Sweden and England told different stories
A Swedish study linked dog-registration and health records for 3,432,153 adults aged 40 to 80, with follow-up of up to 12 years. The association with lower mortality was strongest among people living alone: their hazard ratio was 0.67, commonly described as a 33% lower risk during follow-up3.
The researchers also examined 34,202 people in a twin-register sample with more detailed lifestyle information. They could not replicate the lower risk there, which they thought likely reflected the smaller sample. Extra lifestyle adjustments changed those estimates little3.
Their wider caution matters: personal characteristics could influence both acquiring a dog and health. The direction might also partly run the other way, because someone with illness or disability may be less likely to own a dog. The study could not establish a causal effect3.
In England, researchers pooled six Health Survey for England cohorts, covering 59,352 adults followed for an average of 11.5 years. After adjusting for social and lifestyle factors, they found no statistically significant link between living with a dog and death from any cause or cardiovascular disease4.
That English study also had limits in how dog ownership was measured. Its authors called for better information about timing and caring responsibilities4. A dog in the household is not the same measurement as a person taking the dog out every morning.
Walking is the more useful part of the evidence
A West Cheshire survey included 191 dog-owning adults, 455 adults without dogs and 46 children across 385 households. Dog owners had 4.10 times the odds of reporting enough activity to meet the weekly 150-minute guideline, after the study's adjustments5.
That is an odds comparison, not a claim that each owner was four times as likely to meet the target. Other physical activity did not differ by dog ownership, suggesting the extra recreational walking was added activity in that community. Owners who did not walk their dogs were less active5.
Most activity was self-reported, with activity-monitor checks in a small adult subset. The authors said larger studies and follow-up over time were needed to confirm whether acquiring a dog causes an increase in activity. They also cautioned against getting a dog purely for the person's benefit without considering the animal's welfare5.
This is a less glamorous message than a promise of extra years, but a more useful one when you are deciding what to do after work. You can plan the walk itself. You cannot plan a guaranteed change in mortality risk by adding a dog to the household.
Does getting a dog change activity?
A small Australian study followed 71 adults who chose one of three groups: acquiring a dog, delaying acquisition or having no interest in getting one. Seventeen were in the acquisition group, all women, and only nine of those contributed activity-monitor data6.
Those monitored new owners took an additional 2,589 steps a day at three months compared with baseline. At eight months, the difference from baseline was no longer statistically significant. The study found no statistically significant changes in blood pressure, resting heart rate or its fitness measure6.
The study gives a closer look at change than a one-off survey, but participants chose their groups and the sample was small. The researchers called for larger, more generalisable controlled studies6. It cannot establish that an early rise in steps will last for everyone who brings home a dog.
Build an active week that suits you both
NHS guidance for adults aged 19 to 64 recommends at least 150 minutes of moderate activity a week, or 75 minutes of vigorous activity, alongside strengthening activities on at least two days. It also recommends breaking up prolonged sitting. Brisk walking counts as moderate activity; you should be able to talk but not sing7.
A shared walk can include a brisk stretch and a slower part for exploring, provided both suit your dog. PDSA advises building canine fitness gradually and allowing time for sniffing. Exercise needs depend on factors including age, health, fitness, breed and what the individual enjoys8.
A workable walking plan
- Check your starting pointSpeak to your GP first after a long inactive period or with medical conditions or concerns7.
- Choose a comfortable routeMatch the walk to your dog's fitness and build changes gradually8.
- Notice the brisk portionsThe talk-but-not-sing test helps identify moderate activity for you7.
- Leave room to exploreGive your dog time for a slower sniffing walk too8.
- Look beyond the walkAdd strengthening activity and breaks from sitting to your own week7.
You might mark the brisk portions in a diary and leave the sniffing portions uncounted towards your moderate-activity total. That is our own planning suggestion, not a tested dog-walking prescription. It keeps the two purposes visible without turning every outing into a pace test.
A dog is a commitment, with possible benefits
PDSA advises checking that you have the time and ability to meet a dog's exercise needs. Ask your vet if you are unsure about the amount of exercise or concerned about the dog's weight or fitness8. Your own activity target does not override the needs of a growing puppy, an unwell dog or an older companion8.
The decision to get a dog needs to work even if no extra health benefit appears. If you already have one, the useful opportunity is smaller and closer: a routine you can keep, movement that suits you both and a reason to get outside.
Find the waterproofs if today's walk fits that plan. There can be plenty to enjoy on the way, even when the science cannot promise you extra years.
Sources and further reading8 sources
The small numbers in the article link to the source behind each fact. Sources open on their own websites.
- Dog Ownership and Survival: A Systematic Review and Meta-Analysis
- Does Dog Ownership Really Prolong Survival?: A Revised Meta-Analysis and Reappraisal of the Evidence
- Dog ownership and the risk of cardiovascular disease and death – a nationwide cohort study
- Dog Ownership and Mortality in England: A Pooled Analysis of Six Population-based Cohorts
- Dog owners are more likely to meet physical activity guidelines than people without a dog: An investigation of the association between do…
- Does dog acquisition improve physical activity, sedentary behaviour and biological markers of cardiometabolic health? Results from a thre…
- Physical activity guidelines for adults aged 19 to 64
- Exercising your dog