Drinking coffee can reduce the risk of suicide

U.S. coffee sales have soared, coffee drinkers now have another reason to fill
their
own breakfast coffee cups. Drinking a few cups of coffee a day can reduce
risk of
suicide by
50 percent, according to a new study published in the World Journal of Biopsychotics.researchers at the Harvard School of Public Health (
HSPH
) analyzed data from three major U.S. research institutions and found that adults who drank
2-4
cups of caffeination a day had only
half the risk of suicide
among adults who drank
,
or no caffeine."
, unlike previous studies,
,
We can evaluate the association between consumption of caffeinated and decaffeinated beverages, and we use caffeine as the most important factor that has the potential to have a protective effect.
,"
, lead researcher in the Department of Nutrition at the Harvard
School of Public Health
(HSPH

).caffeine not only stimulates the central nervous system, but can also be used as a mild antidepressant because it promotes the production of certain neurotransmitter in the brain, including serotonin, dopamine and dethyroidine. This could explain past epidemiological studies that found coffee drinkers had a lower risk of depression, the researchers reported.new study, researchers collected data on
43,599,
men enrolled in the Health Follow-up Study (
HPFS
),
73820
women in the Nursing Health Major (
NHS
) and
91005
Care Health II. Participants
s
intake of caffeine, coffee and caffeinate-free coffee was surveyed every 4 to 4 years. Then count caffeine intake from coffee and other sources, such as tea, caffeinated soft drinks, and chocolate. However, coffee is the main source of caffeine
- NHS
,
80%
;
NHS
II.
71%
;
HPFS
,
79%
.
277
of the 3,000 professional subjects
died
suicide.Despite the above findings, the authors do not recommend that adults who are already depressed increase their caffeine intake, as most adults have adjusted their caffeine intake to their best acceptable levels, and blindly increasing their intake may have side effects."
overall, consuming more than
2-3
cups of coffee or
400 mg
caffeine intake per day has no residual benefits
"
,
authors report.researchers did not find a significant difference in suicide rates among people who consumed
2-3
cups of coffee and
4,
cups or more of coffee per day, most likely because the number of suicides among those groups was inherently low. However,
in a previous study on coffee
-
depression conducted before HSPH
, the researchers observed a significant difference in suicide rates among subjects who drank
4,
cups or more of coffee a day. An experiment in Finland showed that people who drank 8-9 cups

coffee a day had a higher suicide rate.Because few of the subjects in the
HSPH
experiment consumed such a large amount of coffee per day, the study did not examine the effect of
6,
cups or more of coffee per day on suicide rates.