Yes, crying can be helpful to release emotional stress that is considered to a major trigger in the development of heart problems, high blood pressure, and type 2 diabetes. In a study conducted at the University of Minnesota, it was observed that crying helps in flushing chemicals/hormones that form under stress. Some of the major stress hormones are eliminated out of the body via tears. Researchers, however, pointed out that tears released while cutting onions are not effective to reduce stress. The study found out that tears resulting from grief, sadness, or after feeling hurt are found to be high in protein-based hormones and adrenocorticotropic hormones. All these hormones are usually secreted as a response to stress. This is the reason people inflicted with sorrow and emotional pain tend to feel better after crying. Also, while crying, we tend to take deep breaths, which also contributes to alleviating stress.
“Crying is cleansing. There's a reason for tears, happiness or sadness.” Dionne Warwick