Does having a pet benefit your health and longevity?
A pet can contribute to more physical activity, less loneliness, and a better sense of wellbeing, but whether it also extends your lifespan has not yet been demonstrated. If you are considering a pet primarily for your health, a dog is the best-supported choice, but weigh the practical burdens as well.
Older adults who own a dog demonstrably walk more. Multiple reviews report this consistently, although the question remains whether dogs themselves are the cause, or whether physically more active people are simply more likely to get a dog in the first place. The precise direction of this relationship has not yet been fully established.
The evidence for mental health is more encouraging. A systematic review shows that dog-assisted interventions in care homes increase social contact and reduce loneliness. This is one of the most consistently replicated findings in this field of research. Broader cross-sectional studies also link pet ownership to better cardiovascular health markers and lower levels of loneliness. Quasi-experimental studies suggest that this is partly a genuine effect of the pet, and not purely a matter of coincidence.
Wondering whether a pet might enhance your sense of wellbeing? It seems it can, but the measure matters. A study of 314 people found a modest but significant association between a stronger bond with the animal and higher wellbeing scores. Quality of life as such, however, showed no significant association with pet interaction in that same study. Wellbeing and quality of life are therefore not automatically the same thing.
People with dementia who live at home may be able to benefit from a pet, but the research on this is very thin: a scoping review found only six studies that met the criteria. The challenges of caring for a pet for someone with dementia have moreover been barely studied.
There are also downsides. Qualitative research among older adults identifies financial costs and concerns about the animal's health as concrete burdens, especially for those living on a limited income or with limited mobility. More broadly, the majority of all studies in this field are descriptive and rely on convenience samples. Randomised trials in humans are scarce, which means firm conclusions about lifespan extension are not yet possible.
The claims are based on two reviews (PMID 19228898, 26164613), one systematic review (PMID 41572201), one observational study (PMID 37758641), a scoping review (PMID 38956987), qualitative research (PMID 31242754), and two publications not further indexed (PMID 6360967, 29457329). No randomised controlled trials available; no meta-analyses.
Will I live longer if I have a sense of purpose in life?
A strong sense of purpose in life is associated with a lower risk of premature death, but whether the relationship is also causal is not yet known. Still, there is no reason to avoid cultivating a sense of purpose: the association is consistent and robust.
What really keeps your mouth and gums healthy?
Daily brushing supplemented with interdental brushes is the best foundation for a healthy mouth; if you have diabetes, regular gum care pays extra dividends for your blood sugar.
Do I live longer with more social contact?
More social contact is associated with a longer lifespan, but the effect is far more specific than you might think: the type of contact and your sex make a difference, and quality counts more than quantity.
How do I keep my kidneys healthy as I age?
The two best-supported steps to limit kidney damage as you age are keeping your blood pressure under control and exercising regularly. Moderate salt intake and a healthy weight demonstrably contribute to both.
How harmful is air pollution to your health?
Air pollution is seriously harmful: it increases your risk of lung and heart disease and costs millions of lives worldwide each year. Cleaner air, both through policy and through personal choices such as avoiding busy roads, demonstrably reduces that risk.
Can I prevent or slow down early-stage hearing loss?
Noise-induced hearing loss is largely preventable by limiting exposure to sounds above 85 dB(A) and wearing hearing protection. Once the damage is permanent, there is no going back.