A study by the Harvard School of Public Health (HSPH) concluded that drinking several cups of coffee a day could cut the risk of suicide by 50 percent in men and women. According to a report in the Harvard Gazette, researchers found that adults who drink two to four cups of caffeinated coffee per day were half as likely to commit suicide as those who didn’t.
Caffeine, in addition to the jolt it provides to the central nervous system, also acts as a mild antidepressant by boosting levels of several key neurotransmitters in the brain, including serotonin, dopamine, and noradrenaline. These chemicals are associated with a sense of well-being, and the study theorized that this would explain the lower incidences of severe depression among coffee drinkers found in previous studies.
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