Psychologists compared data about differences in street tree coverage across Toronto with how healthy people felt, according to a survey called the Ontario Health Study. The long-term study included self-reported data from more than 30,000 individuals, which the researchers used to determine how people perceived their health.
People who lived in neighborhoods with a higher density of street trees (not just parks) reported feeling healthier than people who lived in areas with fewer trees. In terms of how people viewed their health, living on a block with 10 more trees was the equivalent of earning $10,200 more a year, or being seven years younger.
While these findings only applied to how people felt about their health, not how healthy they actually were
via Mental Floss
