According to a study over 14 years carried out on over 23,000 people aged 80 or older residing in 22 provinces of China, those who had the highest “vegetation index” within 250 meters of their home had a mortality rate 27% lower compared to those with the lowest vegetation index.
Lancet, DOI:https://doi.org/10.1016/S2542-5196(18)30264-X