Patients with the tree view were able to leave the hospital about a day earlier than those with a wall view, the study revealed. Patients with trees in sight also requested significantly less pain medication and reported fewer problems to nurses than wall-view patients. Contact with nature, even as limited as a view through a window, enhanced recovery from illness.
Researchers have learned much about the restorative effects of nature since Ulrich's landmark study appeared in 1984. Studies repeatedly have shown that contact with nature can lower blood pressure, reduce anxiety, relieve stress, sharpen mental states and, among children with attention and conduct disorders, improve behavior and learning. Regardless of cultural background, people consistently prefer natural settings over man-made environments.