Stress and the City. A new international study shows that two distinct brain regions that regulate emotion and stress are affected by city living. Being born and raised in a major urban area is associated with greater lifetime risk for anxiety and mood disorders. (Nature, 2011; 474(7352):498) Read more.
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For a long time sleep was not considered a basic human need. Studies on sleep deprivation helped to change this in the 20th century. In terms of human need, sleep is one of the five most important elements. Sleep deprivation can cause a myriad of problems ranging from decreased body temperature to cognitive impairment and hallucination. Although the mechanisms of sleep are not well understood, the problems associated with lack of sleep are.