Thursday, 30 May 2013

Just Get a Pet... you will benefit!


This coming Sunday I will be taking my fur nephew Miles (above) for a fun run with about 350 other people at the Furry Friends 5km in Whitby ON.   This race has influenced me to write a post regarding the positive benefits of owning a pet, particularly a dog which can help to increase your health and vitality.  As a former dog owner myself, being around a selfless, spontaneous and at certain times mischievous animal can help boost your spirit at times when you need it most!

“If your dog is fat, you’re not getting enough exercise” - unkown

Some health benefits of having a dog are obvious.  Whether it is play fighting, walking or jogging, you are forced to get off the couch and move.   Many studies have shown that owning a dog can help to avoid a sedentary lifestyle.  Increasing regular exercise, such as leisure walking can help to decrease the risk of certain cardiovascular conditions.  One study showed that pet owners have lower systolic blood pressure which is the driving force of the contracting heart, than non-pet owners.  Another study showed lower plasma cholesterol levels, as well as triglyceride levels in pet owners.   It is even reported that dogs may show adverse behaviour if their Type 1 diabetic owners are having hypoglycemic episodes which could help their owner avoid an adverse health event.   Finally, pet owners who suffered a heart attack had higher 1 year survival rates than their non-pet owning counterparts.   

More intriguing perhaps than the cardiovascular benefits are the psychological benefits of owning a pet.  Most pet owners do not get a pet to reduce sedentary behaviours but rather to have companionship and an improved quality of life.  In a study that followed just under 1000 participant for one year, it was found that pet owners had fewer doctor contacts than their counterparts without pets.  It has also been reported that HIV positive men that own pets suffer less from depression. 

The authors of one article proposed a theory of how pet companionship can improve cardiovascular health, by reducing emotional stress.  Increased emotional stress leads to a barrage of negative effects on the body.  This is caused by increased sympathetic nervous system function.  We developed this over thousands of years when we had to worry about Saber Tooth Tigers.  If you turned a corner and met up with a tiger you would instinctually fight back or run away (fight or flight).  Nowadays the Saber Tooth Tiger has been substituted for commuting, work deadlines, family stressors etc.  Short durations of this type of emotional stress is good because it can help us get away from the Tiger.  However, when long lasting, this type of stress can lead to chronic disease.  Among other things like exercise, owning a pet can psychologically decrease or limit stressful sympathetic activity.  This decreases potential endothelial dysfunction, chance of cardiac arrhythmias and sudden death, as well as high blood pressure through decreased kidney activity.

There are some studies that show negative effects of pet ownership, for example the distress it may cause the owner when their pet is sick or passes away.  However, in my opinion the positive effects on health far out-weigh the negative.  Although the relationship between pet ownership and well-being can depend on social factors and demographics, we could learn a thing or two, and improve our health if we owned a pet.   

I hope to see you all Sunday!

Until next time, stay healthy my friends!


Dr. Adam


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