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Outdoor Play reduces risk of being short sighted
Detail: The time children spend outdoors could be linked to a reduced risk of being short-sighted, research suggests.

An analysis of eight previous studies by University of Cambridge researchers found that for each additional hour spent outside per week, the risk of myopia reduced by 2%. Exposure to natural light and time spent looking at distant objects could be key factors, they said.

The studies involved more than 10,000 children and adolescents.
Dr Justin Sherwin and his research team concluded that short-sighted children spent on average 3.7 fewer hours per week outdoors than those who either had normal vision or were long-sighted. But they said the reasons why were not yet clear.

They expected to find that children who spent more time outdoors also spent less time doing activities like reading, studying or playing computer games, but no such link was found in two of the eight studies which looked at this relationship.

"Any increase in time spent outdoors must be weighed against exposure to UV radiation - and the increased risk of skin cancer, cataracts and other cancers.

"On the other hand, increasing outdoor physical activity could protect against diabetes and obesity, vitamin D deficiency and osteoporosis, for example," Dr. Sherwin said.

For full story see http://www.bbc.co.uk/news/health-15427954
Source: http://www.bbc.co.uk/news/health-15427954
Date: November 10 2011