A recent study examined the relationship between pet ownership and cognitive decline in older people living alone. Data from the ELSA, which included 7,945 UK adults aged 50 and over, were analysed. Verbal memory and speech rate were assessed at different stages of the study.
Owners of pets (either cat or dog) experienced a slower decline in verbal memory and speech rate than people without pets. There was a faster decline in older people living alone, with the exception of pet owners. Owning a pet was known to potentially offset the link between living alone and cognitive decline.
Future research will need to examine all aspects of cognitive decline, not just memory and language speed. For this, studies involving different ethnic and racial groups are needed, and it is very important to fully understand the cause-effect relationship between pets and cognitive health. Source