Coffee Is Generally Heart-Friendly But it may be linked to a
slight rise in high blood pressure, researchers say Coffee drinkers can take heart from a series of
studies presented this week at American Heart Association conferences in San
Francisco. For example, coffee drinkers appear to have a lower risk of
hospitalization for abnormal heart rhythms. And there’s no indication that
having a few cups every day increases the risk of atherosclerosis, the
thickening of blood vessel walls that can lead to heart attacks and other
problems. What’s more, something in coffee other than caffeine might be
responsible for a reduced risk of diabetes for women who regularly imbibe java.
But it may be linked to a slight rise in high blood pressure The
heart rhythm research looked at the rate at which 130,054 members of the Kaiser
Permanente Medical Care Program were hospitalized for heart rhythm
disturbances. About 2 percent of them had hospital stays because of such
abnormalities, the most common being atrial fibrillation. But the risk was 18
percent lower for those who reported drinking four or more cups of coffee a
day, compared to those who didn't drink coffee, said Dr. Arthur Klatsky, a
senior consultant in cardiology for the program, who led the study.
"It might be a surprise, because
coffee does give some people the jitters," Klatsky said. "And I don't
think we're ready to tell people they should drink coffee to prevent heart
rhythm problems."
The study didn't offer any reason why
coffee might reduce heart rhythm problems, Klatsky said. "It could be that
coffee drinkers have better diets or exercise more. We can't say for sure that
it might not be related to minor heart rhythm problems that don't require
hospitalization."
The bottom line: "Coffee drinkers
don't have to quit because they have heart rhythm problems," Klatsky said.
"That's about as far as we can go."
Another study that has followed more
than 3,000 men and women for 20 years found no association between coffee
consumption and atherosclerosis for just about every demographic group -- men
and women, blacks and whites, smokers and nonsmokers. Participants in the study
included people whose coffee consumption ranged from none to more than four
cups a day. The third study, based on a report from the long-running Women's
Health Study, provided a possible explanation for a lower incidence of type 2
diabetes -- the kind that generally develops later in life -- among coffee
drinkers. Researchers compared 359 post-menopausal women newly diagnosed with
type 2 diabetes and 359 women without the disease. They found that women who
drank four or more cups of caffeinated coffee a day had a 56 percent lower risk
of developing the condition than those who did not drink coffee. That reduced risk appears to be
due to the effects of caffeine on a protein that binds to sex hormones, said
Dr. Atsushi Goto, of the University of California, Los Angeles, who presented
the report. But the finding is preliminary and requires further study,Goto
added.The report linking consumption of one to three cups of coffee a day with
a slightly increased risk of high blood pressure came from Dr. Liwei Chen,
assistant professor of epidemiology at the Louisiana State University School of
Public Health, using data from six studies that included more than 172,000
participants.
"Based on our results, long-term
coffee drinking might be a risk factor for hypertension, but the effect is very
moderate," Chen said. "We definitely need more research and evidence
to clarify our findings based on the meta-analysis of published prospective
studies. Meanwhile, I think it is important for people to consider lowering
their coffee drinking if they are concerned about their blood pressure."
Vocabulary
|
Phonetics
|
Meaning
|
1. Abnormalities ( n )
|
|
an abnormal feature, characteristic, or
occurrence
|
Babies with
congenital abnormalities
|
2. Consumption ( n )
|
|
the action of using up a resource
|
Liquor is
sold for consumption off the premises
|
3. Hypertension ( n )
|
|
abnormally high blood pressure
|
A
state of great psychological stress.
|
จากการอ่านบทความนี้ทำให้รู้ถึงประโยชน๋และโทษของกาแฟ ว่าสิ่งไหนที่เรารับประทานมากจนเกินไปก็ต้องมีผลข้างเคียงอยู่แล้ว ดังนั้นเราควรที่จะรับประทานของทุกอย่างให้พอดีกับตัวเราเพราร่างกายของคนเราล้วนมีความต้องการสิ่งของทุกย่างที่แตกต่างกันออกไป
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