It doesn’t take a scientist to know that pets make humans feel good; anyone who’s ever stroked a dog’s fur or felt a cat’s thrumming purr knows this. Science can, however, tell us how and why pets can be therapeutic. Just 15 minutes bonding with an animal sets off a chemical chain reaction in the brain, lowering levels of the fight-or-flight hormone cortisol and increasing production of the feel-good hormone serotonin. The result: heart rate, blood pressure and stress levels immediately drop. Over the long term, pet and human interactions can lower cholesterol levels, fight depression and may even help protect against heart disease and stroke. This is why pets for the elderly can be so beneficial.

For seniors, the benefits of a furry companion can be life-changing. Walking a dog is great cardiovascular exercise, but just the simple act of caring for a pet-petting, brushing, feeding-provides both mild activity and a means to stay engaged with the world. Pets can make the elderly feel needed, and that feeling can translate into a greater sense of purpose and self-worth. During what can be a lonely time of life, the unconditional love of a cherished dog or cat can be a bridge to more socialization with others, lowered stress, mental stimulation and a renewed interest in life.

In the past, a move to a nursing home or retirement community meant giving up this important bond with the animal world. While many retirement communities, assisted living facilities and nursing homes still don’t allow pets, it’s great that many of these assisted living communities have decided to integrate pets into their communities, as the pet therapy benefits to the elderly is overwhelming.