April
30, 2009 (Bloomberg)
Half a glass of wine a day may add five years to your life, a
new study suggests. Drink beer, and you’ll live only 2 1/2 years
longer.
Dutch researchers followed 1,373 men for more
than four decades, noting their eating and drinking habits. Men who
had about 20 grams of alcohol daily -- equivalent to a half a glass
of wine -- had 2 1/2 years added to their life expectancy at age 50,
compared with men who didn’t drink at all, according to the research
published today in the Journal
of Epidemiology and Community Health. Men who consumed only wine
had twice as much added longevity.
Light alcohol intake was linked to lower cardiovascular,
cerebrovascular and overall mortality in the study. Researchers had
known that moderate drinking is tied to a lower risk of heart
disease, possibly because of an increase in high density lipoprotein
or so-called good cholesterol as well as a reduction in platelet
clumping, making it more unlikely for clots to form. It is the first
study to show that one kind of alcohol is superior to others in
prolonging life, the researchers said.
“In this study, 70 percent of all wine
consumed was red wine,” the researchers, led by Marinette Streppel
of the University
of Wageningen in
the Netherlands, said in the paper. “This suggests that the
cardioprotective effect of wine could be due to a protective effect
of polyphenol compounds in red wine, but other explanations cannot
be ruled out.”
Polyphenols are chemical substances found in plants such as tannins
and flavonoids.
The
research, dubbed Zutphen Study after the Dutch town from which the
participants were recruited, followed men born between 1900 and 1920
and examined them several times between 1960 and 2000.
Health Secrets of Red Wine Uncovered
THURSDAY, June 11, 2009 (Health Day
News) -- Scientists already knew that drinking red wine in
moderation is good for your health; now they are figuring out
why.
New research is uncovering the
disease-prevention secrets of a polyphenol called resveratrol,
one of compounds in red wine that seems to improve health. Although
the benefits have been touted for years, researchers weren't sure
how polyphenols, and resveratrol in particular, worked in the body.
"The breadth of benefits is remarkable
-- cancer prevention, protection of the heart and brain from damage,
reducing age-related diseases, such as inflammation, reversing diabetes and
obesity, and many more," said Lindsay Brown, an associate professor
of the School of Biomedical Sciences at the University of Queensland
in Australia and co-author of a study that will appear in the
September issue of Alcoholism: Clinical Camp; Experimental
Research.
Brown said scientists are beginning to
understand how resveratrol does its work. Possible mechanisms
include:
High doses of the compound may prevent cancer by
increasing the process of apoptosis (programmed cell death).
Low doses improve cardiac health by
increasing cellular protection and reducing damage.
Resveratrol may help remove very
reactive oxidants in the body and improve blood supply to
cells.
Scientists are also studying how the
body absorbs resveratrol into the blood stream, since the compound
is largely inactivated in the gut and liver.
"Most of the resveratrol in imbibed red
wine does not reach the circulation," Stephen Taylor, a professor
of pharmacology at the University of Queensland, said in a
journal news release. "Interestingly, absorption via the mucous
membranes in the mouth can result in up to around 100 times the
blood levels, if done slowly rather than simply gulping it down."
Note: Oregon State University has more
on resveratrol.
To
your health!