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" As much as we complain about other people, there is nothing worse for mental health than a social desert. A study of Swiss cities found that psychotic disorders, including schizophrenia, are most common in neighborhoods with the thinnest social networks. Social isolation just may be the greatest environmental hazard of city living—worse than noise, pollution, or even crowding. The more connected we are with family and community, the less likely we are to experience colds, heart attacks, strokes, cancer, and depression. Simple friendships with other people in one’s neighborhood are some of the best salves for stress during hard economic times—in fact, sociologists have found that when adults keep these friendships, their kids are better insulated from the effects of their parents’ stress. Connected people sleep better at night. They are more able to tackle adversity. They live longer. They consistently report being happier. "
― , Happy City: Transforming Our Lives Through Urban Design