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Pets don’t just steal your heart—they can actually strengthen it. Owning a dog, for example, makes a daily walk non-negotiable, and petting an animal can lower heart rate, blood pressure and cortisol levels, says Sandra Barker, Ph.D., director of the Center for Human-Animal Interaction at Virginia Commonwealth University in Richmond, VA.
A study funded by the National Institutes of Health (NIH) found that people who suffered a heart attack were much more likely to be alive a year later if they were dog owners.
Studies have also shown that simply watching fish swim in an aquarium can lower blood pressure. And if you have diabetes, note that certain dog breeds, such as Labrador retrievers, can be trained to detect subtle changes in your breath or body odor that occur when blood sugar dips. In some cases, these dogs can sense a coming drop in blood sugar sooner than a glucose meter.