New research suggests that having a dog might boost a single person's life span.
The study tracked more than 3.4 million Swedes, middle-aged and older, for 12 years. All were free of heart disease at the beginning of the study.
The researchers reported that dog owners who lived alone were 11 percent less likely to die of heart disease and a third less likely to die from any cause, compared with those who lived alone and didn't have a dog.
The study was published in the journal Scientific Reports.
the dogs make me happy
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