Having a Pet Need Not Affect the Factors of Aging

The people, who own pets, seem to exhibit similar physical and psychological factors like the people who don't own any pets, says a report.

Owning a pet does not appear to slow the rate of ageing, as measured by standard indicators, suggest the authors of a study published in the Christmas issue of The British Medical Journal. There are long standing claims that animal companionship might be linked to human health, and with around half of UK households owning a pet, it could be concluded that many people believe interaction with animals is life enhancing.

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‘Having a pet does not influence the factor of aging. There are no substantial differences either in physical or psychological factors between the pet owners and non-pet owners.’

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Studies have suggested there are potential positive and negative health consequences of pet ownership. These include the grief and distress felt after a pet's death, alongside the benefits of improved psychological health from a sense of companionship provided by pets, or increased physical activity from regular walks with a dog that could influence weight regulation and heart health.

With more than 10% of older adults indicating that pet ownership is their major source of companionship, there is an obvious need to examine if pet ownership influences bio-markers of healthy ageing.

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A team of researchers from University College London and the University of Cambridge therefore set out to examine these relationships in older people.

They used data from the English Longitudinal Study of Ageing (ELSA) - an ongoing, longitudinal study of a representative sample of men and women who, when recruited in 2002-03, were aged 50 or more and living in England.

The researchers analysed data on more than 8,700 adults with an average age of 67. Data have been collected every two years using personal interviews, self-completion questionnaires, and a nurse assessment of physical functioning.

A third of participants owned a pet, with 18% owning a dog, 12% a cat, and 3% another animal.

After taking into account a range of relevant variables such as smoking and drinking, the researchers found no evidence of a strong association of any type of pet ownership with walking speed, lung function, standing up from a chair, grip strength, leg raises, balance, nor three blood inflammatory markers, memory, or depression.

And these results held true after separate analyses of male and female pet owners.

The researchers point out that this is an observational study, so no firm conclusions can be drawn about cause and effect, and they outline some limitations that could have affected the results.

Nevertheless, they conclude: "At least in the present cohort study of older adults in England, animal companionship seems to confer essentially no relation with standard physical and psychological bio-markers of ageing."

Source: Eurekalert