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Crying does not only mentally cleanse us, it can cleanse our body too. Tears that are produced by stress help the body get rid of chemicals that raise cortisol, the stress hormone. A study conducted by Dr. William H. Frey II, a biochemist and director of the Psychiatry Research Laboratories at the St. Paul-Ramsey Medical Centre, found like other exocrine processes, including exhaling, urinating, and sweating, toxic substances are released from the body when we cry. Several of the chemicals present in emotional crying are the protein prolactin, adrenocorticotropic hormones, and the endorphin leucine-enkephalin, which reduces pain.