“Increasing greenery in US urban areas may substantially reduce mortality of all causes, according to a new study led by Boston University School of Public Health researchers.
Published in the journal Frontiers in Public Health, the nationwide study found that increasing green vegetation in large, metropolitan areas could have prevented between 34,000-38,000 deaths, based on data from 2000-2019. The study also showed that overall greenness in metro areas has increased in the past 20 years, by nearly 3 percent between 2000-2010 and 11 percent between 2010-2019.
The study builds upon well-established research on the health benefits of greenness by providing a quantitative value to the potential impact of urban greening initiatives on mortality.” https://www.eurekalert.org/news-releases/953361
Eideard 
“Increasing greenery in US urban areas may substantially reduce mortality of all causes, according to a new study led by Boston University School of Public Health researchers.
Published in the journal Frontiers in Public Health, the nationwide study found that increasing green vegetation in large, metropolitan areas could have prevented between 34,000-38,000 deaths, based on data from 2000-2019. The study also showed that overall greenness in metro areas has increased in the past 20 years, by nearly 3 percent between 2000-2010 and 11 percent between 2010-2019.
The study builds upon well-established research on the health benefits of greenness by providing a quantitative value to the potential impact of urban greening initiatives on mortality.”
https://www.eurekalert.org/news-releases/953361