Keep drinking your morning cup of joe, coffee drinkers. Aside from a jolt of energy, caffeinated coffee may lower the suicide risk in men and women by 50 percent, Harvard researchers indicated in a recent study.
Reviewing data from three large-scale U.S. studies, the team from the Harvard School of Public Health compared the risk of suicide for adults who consumed two to four caffeinated cups per day with that of non-coffee drinkers, those who drank much less coffee per day and people who chose decaf.
The results, published earlier this month in the The World Journal of Biological Psychiatry, were striking. Comparatively, the suicide risk for those who drank two to four cups per day was about 50 percent less than the risk for subjects in the other groups. (The total sample included more than 200,000 participants, who were studied for time spans of at least 16 years.)
“Unlike previous investigations, we were able to assess association of consumption of caffeinated and non-caffeinated beverages, and we identify caffeine as the most likely candidate of any putative protective effect of coffee,” lead researcher Michel Lucas, a research fellow in the university’s department of nutrition, said in a statement.
The team’s findings are, perhaps, not surprising since caffeinated coffee has been linked to a lower risk of depression among women in the past. In a 2011 study, also conducted by Harvard researchers, women who drank coffee were shown to have a 15 percent reduced risk of depression as compared to non-coffee drinkers.
Speaking to The Huffington Post, Lucas stressed that it’s the caffeine in coffee that’s primarily responsible for these effects. He linked the lowered risks of depression and suicide to the impact caffeine has on the brain or, more specifically, on neurotransmitters that have been shown to have an effect on emotions.
