Living healthier with a dog
What science knows about the human-dog relationship. Five positive effects from research.
1. Dogs reduce stress and promote relaxation
. Contact with a dog can measurably reduce stress. Studies show that even petting a dog lowers the level of the stress hormone cortisol, while simultaneously releasing oxytocin. This so-called cuddle hormone represents relaxation, trust, and social bonding. This effect can occur not only in dog owners but also in strangers when interacting with a friendly dog.
2. Dogs promote mobility and heart health
Dogs need to go outside – and their owners benefit from this. Several international studies show that, on average, dog owners get significantly more exercise than people without dogs. An Irish long-term study in 2025 found that seniors with dogs are steadier on their feet and fall less often. Regular walks also have a positive effect on blood pressure, the cardiovascular system, and overall fitness. This can measurably reduce the risk of cardiovascular disease. What matters less is how strenuous the walk is, but rather how regularly the exercise is integrated into daily life.
3. Dogs have a positive effect on mental health.
Dogs can alleviate loneliness and depressive moods. Particularly among people living alone or the elderly, various studies show a correlation between dog ownership and greater emotional well-being. Dogs provide structure, respond immediately to affection, and convey a sense of being needed – an important psychological factor. While dogs do not replace therapy, they can provide stability in everyday life.
4. Dogs strengthen social connections
. Dogs are social bridge builders. During walks, conversations with pedestrians or other dog owners almost automatically arise, which can develop into lasting relationships or regular encounters. Current studies show that dog owners engage in conversations with other people more often and find it easier to build social networks. This effect contributes to long-term social integration and emotional stability.
5. Dogs can support children’s development
. Living with dogs also has positive effects on children. Studies suggest that children with dogs are more likely to exhibit empathetic behavior and to develop a sense of responsibility more quickly. These effects occur not only with their own pet, but also when, for example, a dog is used in the classroom. A 2021 Spanish study even found a significant effect: all girls and boys with dogs showed more advanced socio-emotional development than children without a pet. The four-legged friend is often a playmate, a listener, and an emotional anchor all at once. Furthermore, early contact can train the immune system and reduce the risk of certain allergies.