Adult type 2 diabetes poor information on diet, but exercise seems good Type 2 diabetes leaves a person at danger of having elevated levels of sugar …
The Cochrane Library
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Strictly Embargoed until 00:01 hours GMT, 18th July 2007
This release focuses on two Cochrane Systematic Reviews on diet publishing
next week in The Cochrane Library, 2007, Issue 3
To receive a full copy of the Reviews highlighted, or to arrange an
interview with an author, contact Jennifer Beal 44 01243 770633 or by
email, jbeal@wileycouk
Reviews highlighted in this newsletter:
Obesity: lentils better than white bread for dieting
You have a greater possibility of losing weight if you eat a diet that
is high in foods like lentils that release energy slowly once they
have been consumed, rather than one that is high in foods that rapidly
release sugar into the blood stream such as white bread, a Cochrane
Systematic Review has concluded
Adult type 2 diabetes - poor information on diet, but exercise seems
good
There are no high quality data to assess how well dietary treatments
for type 2 diabetes work in people who have just been told they
have
the disease, but there is evidence that taking on exercise seems to be
one way of improving blood sugar levels, according to the findings of
a Cochrane Systematic Review
Obesity: lentils better than white bread for dieting
You have a greater possibility of losing weight if you eat a diet that is
high in foods like lentils that release energy slowly once they have been
consumed, rather than one that is high in foods that rapidly release
sugar into the blood stream such as white bread, a Cochrane Systematic
Review has concluded
When foods are eaten the body breaks them down into their components, and
one component will be sugar Different foods break down at different
rates Lentils, for instance, generate a long, gentle release of sugars,
while foods like white bread send a sudden rush of sugar into the blood
stream Foods that release sugars rapidly are said to have a high
glycaemic index - those that release it slowly have a low glycaemic
index
A team of Cochrane Researchers set out to search for carefully conducted
research trials that looked at the effects of eating high and low
glycaemic index foods
They found six randomised controlled trials that
involved a total of 202 participants The trials ran for between five
weeks and six months
Their conclusion was that people eating low glycaemic index diets lost a
mean of one kilogram more than those on similar energy high glycaemic
index diets
Low glycaemic index diets appear to be particularly effective for people
who are obese, says lead author Dr Diana Thomas, the Scientific Director
of the Centre for Evidence Based Paediatrics Gastroenterology and
Nutrition, in Westmead, Australia
It may be easier to adhere to a low glycaemic index diet than a
conventional weight loss diet, since there is less need to restrict the
intake of food so long as the carbohydrates consumed have a low glycaemic
index, says Thomas
Thomas DE, Elliott EJ, Baur L Low glycaemic index or low glycaemic load
diets for overweight and obesity Cochrane Database of Systematic Reviews
2007, Issue 3 Art No: CD005105 DOI: 101002/14651858CD005105pub2
Adult type 2 diabetes - poor information on diet, but exercise seems good
There are no high quality data to assess how well dietary treatments for
type 2 diabetes work in people who have just been told they have the
disease, but there is evidence that taking on exercise seems to be one
way of improving blood sugar levels, according to the findings of a
Cochrane Systematic Review
Type 2 diabetes leaves a person at danger of having elevated levels of
sugar glucose in their blood This high sugar content then causes
damage to blood vessels, which in turn harms many organs including the
eyes, nerves, kidneys and heart
When people are first diagnosed with this disease they are given dietary
advice in the hope that this will enable them to take more control over
the level of sugar in their blood However, after searching published
scientific literature, a team of Cochrane Researchers was unable to find
high quality data that showed whether dietary advice did indeed alter the
risk of developing long-term complications, affect overall quality of
life or the likelihood of dying
We did find 36 published articles that reported work from 18 different
trials which included a total of 1467 people with type 2 diabetes, but
only a minority of these trials examined hard clinical endpoints
such as
death or vascular disease, and those that did offered no details; most
talked about factors that are easier to measure such as weight or blood
sugar control, says lead researcher Nield, a researcher at the
University of Teesside in Middlesbrough, UK
The team did, however, find data suggesting that if people with type 2
diabetes increase the amount of exercise as an adjunct to dietary advice
they do, then they can see an improvement in their blood sugar levels
after six and twelve months
There is an urgent need for well-designed and well-reported studies
which examine a range of interventions and see how they influence many of
the features that are important in type 2 diabetes, says Lucie Nield
The researchers point out that there is some good news, in that one
promising study is already underway
Nield L, Moore HJ, Hooper L, Cruickshank JK, Vyas A, Whittaker V,
Summerbell CD Dietary advice for treatment of type 2 diabetes mellitus
in adults Cochrane Database of Systematic Reviews 2007, Issue 3 Art
No: CD004097 DOI: 101002/14651858CD004097pub4
- Ends -
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Jadad AR, Cook DJ, Jones A, Klassen TP, Tugwell P, Moher M, et al
Methodology and reports of systematic Reviews and meta-analysies: a
comparison of Cochrane Reviews with articles published in
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Source:cochrane.org
