Drinking coffee linked to lower suicide risk
People who drink two to four cups of coffee a day are considerably less likely to commit suicide. So concludes a report from the Harvard School of Public Health based on the analysis of three large U.S. studies.
The research found that drinking that much coffee lowered the risk of suicide by as much as 50 percent, compared to adults who drank decaf coffee or little to no coffee at all. The scientists explained that coffee can act as a mild anti-depressant, boosting production of dopamine, serotonin and noradrenaline in the brain.
The researchers analyzed data collected from the Health Professionals Follow-up study, the Nurses' Health Study and the Nurses' Health Study II—studies that included information from 43,599 men and 164,825 women. Study participants' caffeine and coffee intake was recorded, as were suicide rates. Caffeine consumption also was assessed for non-coffee sources as well, such as chocolate, tea or caffeinated soft drinks.
Previous research has found that people who drink more than four cups a day have a higher prevalence of depression.