Man's best friend: How dogs are helping people destress even more than expected

New studies show dogs are playing a greater role than ever in helping humans de-stress. Data shows that dog owners are at a 24 per cent lower risk of death compared to those who don't own dogs. They also have a four times greater chance of surviving for at least a year after a heart attack than non-dog owners. So, how are they doing it?

Explainers