Coffee reduces risk of death from cancer
(NaturalNews) People who drink four or more cups of caffeinated coffee
each day have only half the risk of dying from oral or pharyngeal cancer
when compared to those who drink less, according to a new
American Cancer Society study published in the
American Journal of Epidemiology.
Prior
studies have found that higher levels of coffee consumption are
correlated with a lower risk of contracting oral and pharyngeal cancer.
For example, a study published in the journal
Cancer Epidemiology Biomarkers and Prevention in November found that coffee drinkers (as long as they had fewer than
five cups a day) were 39 percent less likely to develop cancer of the
mouth or throat than non-coffee drinkers - although the effect was
weaker in those who regularly smoked or drank liquor. The researchers
noted that scientists have identified more than a thousand natural
coffee chemicals that may have cancer-fighting properties.
In the
American Cancer Society study,
researchers looked for a connection between rates of death from oral or
pharyngeal cancer and consumption of tea, caffeinated coffee and
decaffeinated coffee. The researchers used data from the Cancer
Prevention Study II, a long-term study launched by the society in 1982.
"Coffee
is one of the most widely consumed beverages in the world, and contains
a variety of antioxidants, polyphenols, and other biologically active
compounds that may help to protect against development or progression of
cancers," lead author Janet Hildebrand said.
Four cups a day, half the riskThe
researchers examined 968,432 adults who were cancer-free as of 1982. In
the intervening 26 years, 868 of the study's participants died of mouth
or throat cancer. Using this data, the researchers found that people
who drank four cups or more of caffeinated
coffee each day were 49 percent less likely to die from throat or mouth cancer
than people who never drank coffee or only occasionally. In fact, every
cup per day that a person consumed significantly decreased the
risk of death, even after the researchers corrected for sex, alcohol use or smoking.
The
researchers also found evidence that consuming two or more cups of
decaffeinated coffee per day might similarly reduce the risk of death
from
cancer, but
the findings were not statistically significant enough for the
researchers to declare confidence in them. No connection was found
between tea consumption and cancer death.
Because the study only looked at correlation, it could not determine whether coffee consumption directly causes the observed
reduction in risk of death. Even if coffee does directly reduce a person's risk
of dying from these cancers, it remains to be seen whether it does so by
reducing the risk of contracting the cancer, improving the prognosis or
both.
"Although it is less common in the United States,
oral/pharyngeal cancer is among the ten most common cancers in the
world," Hildebrand said. "Our finding strengthens the evidence of a
possible protective effect of caffeinated coffee in the etiology and/or
progression of cancers of the mouth and pharynx."
Source:-
http://www.naturalnews.com/038439_coffee_drinkers_cancer_risk_reduction.html