In addition to companionship, dogs also boost their owners' cardiovascular health through walks, said the researchers.
The risk of death was found to be about 33 per cent lower for single dog-owners than non-owners, and the risk of heart attack was 11 per cent lower, according to the study.
A recent study which analyzed 3.4 million Swedish civilians has found that people that have dogs present a lower risk of death by cardiovascular disease and other issues when compared with that of people without a canine pet.
Older studies have suggested that the risk of heart disease is higher among people who live alone. Dogs are excellent - anyone who isn't a bad person intuitively knows that - and now science has backed it up with research showing that people who own a pooch typically live longer.
The reasons for these trends is probably fairly obvious: Dogs love to be outside and a lot of them require daily walks or play time to expend their energy. But in this case, the research showed having a hunting breed dog was associated with the lowest risk of cardiovascular disease death. "Other explanations include increased wellbeing and social contacts or effects of the dog on the bacterial microbiome in the owner", says Tove Fall, senior author of the study and associate professor in epidemiology at Uppsala University.
Researchers examined data from national registries for people between the ages of 40 to 80 and compared it with dog ownership registers, the BBC reports.
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If you ask my not very humble opinion, dogs have always and will always be better than cats.
"Perhaps a dog may stand in as an important family member in the single households".
And then there's the theory that dogs positively affect people's gut bacteria.
This guy is fit because his dog is fit, you get me?
Dogs could alleviate social isolation, depression and loneliness, the study said.