TORONTO -- Canadians who are spending lots of their leisure time in front of screens -- especially TV screens -- are more likely to be obese, a new study suggests.
It's been known for awhile that rising screen time, as it's called, is contributing to childhood obesity. But this study, drawing from data in Statistic Canada's Canadian Community Health Survey, is one of the first looking to see if there is a link between screen time and obesity among Canadian adults.
And there appears to be.
Adults who watch more than 21 hours of TV a week were 80 per cent more likely to be obese than people who watched five hours or less television. Men who spent a lot of their leisure time in front of a computer screen were 20 per cent more likely to be obese and women were 30 per cent more likely than people who didn't send much time in front of a computer.
"From this, we would suggest that decreasing television viewing time in particular may be to the advantage of people at risk of overweight or obesity,'' said Mark Tremblay, one of the authors and the director of the Healthy Active Living and Obesity Research Institute at the Children's Hospital of Eastern Ontario in Ottawa.
The study, based on a survey of 42,600 men and women aged 20 to 64, found that in 2007, nearly three out of every 10 Canadian adults reported they watched an average of 15 or more hours of television a week and nearly two in 10 said they watched 21 or more hours a week.
Frequent leisure time computer use was less common, with about 15 per cent of adults reporting they averaged 15 or more hours a week at their computers. Only six per cent reported 21 hours or more a week of leisure computer screen time and nearly a third said they spent none of their leisure time in front of a computer screen.
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