The study, publicized in Psychological Bulletin, included more than 190,000 participants from 201 separate studies.
A group of researchers led by MaryCarol Hunter, an ecologist at the University of Michigan, reached those findings by recruiting 36 urban dwellers to engage in nature experiences for an 8-week study.
Researchers at the University of Washington found that relative wildness in urban parks is vital to physical health and mental wellness.
Transcendental meditation was linked to significant reductions in stress and anxiety, new preliminary findings suggest.
The intervention is known as Strengths for the Journey and a study of the program was published in Development and Psychopathology.