Oily fish 'can help beat obesity'
- From: "Roman Bystrianyk" <rbystrianyk@xxxxxxxxx>
- Date: 28 Aug 2006 09:11:47 -0700
RICHARD SHEARS, "Oily fish 'can help beat obesity'", Daily Mail, July
28, 2006,
Link:
http://www.dailymail.co.uk/pages/live/articles/health/healthmain.html?in_article_id=398086&in_page_id=1774
If you enjoy sardines on toast or a dinner of oily fish, keep tucking
in - they'll help to keep your weight down and maintain good health,
a new study reveals.
Fatty acids found in fish are known to slow ageing in the human brain
but new research by an Australian team of scientists has now discovered
that overweight people can also benefit from fish oils, as long as they
do a little exercise.
Daily doses of oil containing Omega-3 fatty acids, combined with
moderate exercise like walking for three quarters of an hour, can
result in significant weight loss, the researchers have found.
But taking the oils without exercise, or exercising without taking
oils, does not result in any weight loss, the team from the University
of South Australiahas found.
In simple terms, fish oil increases the elasticity of blood vessel
walls and improves the flow of blood to muscles during exercises.
"When we divided up a number of people in our research programme, we
found that those taking fish oil combined with exercise lost
significantly more fat mass than any other group in the study," said
the research leader, Professor Peter Howe.
Sixty eight overweight-to-obese adults at risk of coronary disease took
part in the 12-week trial overseen by PhD student Miss Alison Hill.
They were divided into four - a group taking fish oil and exercise,
another taking just fish oil, a third group taking sunflower oil
without exercise and a fourth being asked to combine sunflower oil and
exercise.
As well as being overweight, the participants had risk factors for what
is known as 'metabolic syndrome' - a cluster of symptoms associated
with obesity and includes elevated blood pressure.
Other risk factors in the study group were high blood triglycerides - a
type of fat which is an indication of future heart and arterial disease
-- and insulin resistance or heightened insulin levels, which are
precursors to diabetes.
"The consequences of metabolic syndrome are type two diabetes and
cardiovascular disease, which is why we're so concerned about the
looming epidemic of obesity," said Professor Howard.
The clear winners in the study were those in the group who were given
small daily doses of fish oil and who walked or ran for 45 minutes
three times a week. They lost an average of 4.5lb over the three
months.
The group which took the sunflower oil, which does not contain Omega-3
fatty acids, but who exercised, did not lose any weight. The two groups
which did no exercise including those on fish oil - also lost no
weight.
"If you take the Omega-3 each day and exercise moderately, our studies
show your weight will drop," said Miss Hill. "We were very surprised to
see it was so effective, especially since these people were still
eating whatever they wanted."
Professor Howard said: "Seeing the impact on body shape and body
composition of these participants has been the most exciting outcome of
the research."
.
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