A series of joint studies from Stanford University School of Medicine and several medical schools and institutions in Japan demonstrated that exposure to “phytoncides” released by trees and plants may boost immunity by increasing natural killer cell quantity and activity among other effects.
Dr. Seheult illustrates how these studies were conducted as exposure to forests (forest bathing) may fall into the category of additional things we can do (and that don’t cause harm) to potentially help prevent viral infections such as COVID-19. Also discussed is how the state of New York decided to count some deaths that have occurred at home that were presumed to be from COVID-19 but did not have a positive test.