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Al-Rai – Reuters
A small study suggests that people living in neighborhoods with larger green spaces may be less stressed and risk heart attacks and strokes than many green spaces.
Researchers at the American Heart Association note that at the population level, long-term connectivity is badociated with green areas in residential areas, at a reduced risk of death from heart disease, respiratory problems and at a reduced risk of hospitalization due to heart attacks and strokes.
But there is little evidence to show if this link is true at the individual level.
As part of this study, researchers tested a range of vital signs of stress and risk of heart disease in blood and urine samples in 408 patients from a Louisville Heart Hospital, in Kentucky.
The researchers also used satellite data from NASA and the US Geological Survey to estimate the size of green spaces where everyone lives.
The study found that adrenaline levels in urine samples were lower than those living in green areas compared to people living in areas with a lower green zone, indicating lower stress levels. They also have an indicator of oxidative stress.
In addition, people living in greener areas were able to maintain healthy blood vessels compared to those living in restricted green areas.
"The magnitude and strength of the effect of greenery on health are surprising," said Arunny Battnagar, lead author of the study. "If the results of this study are confirmed, then a continued interaction with nature could be a way to reduce the risk of heart disease," he said.
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