Research suggests that owning dogs or cats may help preserve certain cognitive functions as individuals age, potentially countering cognitive decline linked to dementia. The study, published in the journal Scientific Reports, indicates that dog owners benefit from improved memory, while cat owners experience slower declines in verbal fluency.
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Adriana Rostekova, the lead researcher from the University of Geneva, analyzed data from eight waves of the Survey of Health and Retirement in Europe, assessing pet ownership's impact on adults aged 50 and older over an 18-year period. The study highlighted significant differences in cognitive outcomes depending on the type of pet, noting that fish and birds did not show a meaningful association with cognitive preservation.
Rostekova stated, "Pet ownership has been linked to a positive influence on cognitive functioning and cognitive decline in late adulthood, but there's limited understanding of how different species of pets are associated with these outcomes." She theorized that emotional connections forged with dogs and cats may contribute to cognitive benefits, unlike the shorter relationships often formed with fish or birds.
Possible factors for the lack of cognitive benefits in fish and bird owners include the pets' limited lifespans and how bird ownership might disrupt sleep due to noise, which has been identified as a factor related to cognitive decline.
Other studies have indicated that interacting with dogs and cats can enhance brain activation, particularly in areas linked to attention and emotional responses. Rostekova also noted the potential for increased social interaction through pet ownership, which could further explain the cognitive advantages associated with dogs and cats.
As the NHS contends with an aging population and increasing dementia rates, researchers believe these findings could influence perspectives on healthy aging and the role of animals as companions. Andrew Scott, author of The Longevity Imperative, remarked on the importance of preventive health measures that encompass enjoyable activities, like pet ownership, as beneficial for well-being.