Four ways having a pet increases your lifespan

Pet owners will often swear their beloved pooch or moggie does wonders for their wellbeing, and now we have empirical proof. A new study has found dog ownership is linked to improved heart health for humans. This is an important finding, given heart disease is the leading cause of death globally. While the new study focuses on dogs and heart disease, it raises the broader question of how pet ownership affects human longevity. Can pets create health in humans?