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Cranberry juice may combat heart disease by
raising levels of "good" cholesterol and antioxidants, researchers said
today.
A US study suggests that drinking three
glasses of cranberry juice a day could reduce heart disease risk by
40%.
A group of 19 volunteers with high
cholesterol were given between one and three glasses of juice a day over a
period of three months.
Scientists found that three servings
appeared to increase levels of high density lipoprotein (HDL) cholesterol
by an average of 10%.
HDL is known as "good" cholesterol because
unlike "bad" low density lipoprotein it protects against heart
disease.
The increase corresponded to a reduction in
heart disease risk of about 40%, based on known epidemiological data.
At the same time the researchers found that
the amount of antioxidants available to the body increased by up to 121%
after two or three glasses of cranberry juice a day.
Antioxidants mop up dangerous atomic
particles called free radicals and are also known to reduce the risk of
heart disease, as well as cancer.
Professor Joe Vinson, from the University of
Scranton in Pennsylvania, who led the research, said: "This study gives
consumers another reason to consider drinking cranberry juice, which has
more health benefits than previously believed.
"People should consider drinking it with
their meals, perhaps as an alternative to soda."
He presented the findings at the annual
meeting of the American Chemical Society in New Orleans.
Previous studies have shown that cranberries
can help prevent urinary tract infections, such as cystitis, and may
reduce the risk of gum disease, stomach ulcers and cancer.
How cranberry juice influences cholesterol
levels is not clear. Professor Vinson suspects that it involves the
fruit's high levels of polyphenols, a powerful type of antioxidant.
He now plans to test the effect of cranberry
juice on volunteers with normal cholesterol
levels. |