Living in a greener neighbourhood could lower your risk of death: study

Researcher Dan Crouse.

Not just parks but also streetside trees and lawns could have health benefits, study suggests

(Emily Chung, CBC News) — Trees stretching their canopies over city streets and grass tickling the sidewalk near your home are more than just pretty, they could actually be helping you live longer, a new study suggests.

Researchers at the University of New Brunswick used census and tax data to track 1.3 million non-immigrant Canadian adults living in the 30 biggest cities across the country, from Victoria to St. John’s, over 11 years starting in 2001. They measured the amount of greenery from trees, shrubs, grass and other plants within 250 metres (about two blocks) of the study subjects’ homes, using postal codes and satellite data. And they found that as the amount of greenery increased, people’s risk of death decreased “significantly” from natural causes.

“There was a lot bigger effect than I think any of us had been expecting,” said Dan Crouse, a health geographer and lead author of the study published this week in the journal The Lancet Planetary Health.

Using NASA’s Aqua satellite, the greenery was measured on a scale of 0 to 1. (Zero represented bare ground; 1 was complete coverage by dark green leafy plants.) The study found that each 0.15-point increase in greenness near the subjects’ homes was associated with an eight to 12 per cent decrease in the risk of death. (…)

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