Re: Only fibre from whole grains reduces colon cancer risk

randy@xxxxxxx <randy@xxxxxxx> wrote:
On Nov 11, 11:03 am, Chris Malcolm <c...@xxxxxxxxxxxxxxxxx> wrote:
ra...@xxxxxxx <ra...@xxxxxxx> wrote:
On Nov 11, 3:42 am, Chris Hogg <m...@xxxxxxxxxxx> wrote:
http://www.bbc.co.uk/news/health-15674998

Fibre and whole grains 'reduce bowel cancer risk'

A bowl of bran cereal high fibre cereals are just one type of fibre
which were shown to help prevent colorectal cancer. Eating more
cereals and whole grains could reduce the risk of developing
colorectal cancer, a BMJ study says. Researchers from Imperial College
London found that for every 10g a day increase in fibre intake, there
was a 10% drop in the risk of bowel cancer.

But their analysis of 25 previous studies found that fruit and
vegetable fibre did not reduce risk. A cancer charity called for more
detailed research on the quantity and type of fibre to eat. Eating
fibre and whole grains is known to help protect against cardiovascular
disease, but experts say that any link with colorectal cancer is less
clear because studies have not had consistent results.

Reviewing the results of all previous observational studies in this
area, researchers in London, Leeds and the Netherlands analysed data
provided by almost two million people. Their conclusion, published in
the British Medical Journal, is that increasing fibre intake,
particularly cereal fibre and whole grains, helps prevent colorectal
cancer. Whole grains include foods such as whole grain breads, brown
rice, cereals, oatmeal and porridge.

Dagfinn Aune, lead study author and research associate in the
department of epidemiology and biostatistics at Imperial College
London, said their analysis found a linear association between dietary
fibre and colorectal cancer. "The more of this fibre you eat the
better it is. Even moderate amounts have some effect."

Adding three servings (90g per day) of whole grains to diets was
linked to a 20% reduction in the risk of colorectal cancer,
researchers said. Cancer Research UK data shows that the lifetime risk
of being diagnosed with colorectal cancer in the UK is estimated to be
one in 14 (6.9%) for men, and one in 19 for women (5.4%).

However, the study said there was no evidence that fibre in fruit and
vegetables played a part in reducing risk. A previous study which
showed a reduction in risk with high intake of fruit and vegetables
suggests that compounds other than fibre in fruit and vegetables could
account for this result, said the authors.

They also said that the health benefits of increasing fibre and whole
grains intake was not restricted to colorectal cancer. "It is also
likely to reduce the risk of cardiovascular disease, type 2 diabetes,
overweight and obesity, and possibly overall mortality," the
researchers said.

Mark Flannagan, chief executive of Beating Bowel Cancer, said the
research supported the charity's current advice. "These results
support what we already know about the link between dietary fibre and
a reduced risk of bowel cancer, although more work is needed to
clarify the quantity and types of fibre we should be eating to reduce
risk. We recommend that people eat a healthy balanced diet that
includes plenty of dietary fibre, such as grains, cereals, fruit and
vegetables to reduce the risk of developing bowel cancer. It is
encouraging to know that simple changes to your diet and lifestyle
could help protect you from the UK's second biggest cancer killer."

Yinka Ebo, senior health information officer at Cancer Research UK,
said the review added weight to the evidence that fibre protects
against bowel cancer. "It shows that certain sources of fibre, such as
cereal and whole grains, are particularly important. Eating plenty of
fibre is just one of many things you can do to lower your risk of
developing the disease, along with keeping a healthy weight, being
physically active, cutting down on alcohol, red and processed meat,
and not smoking."

In an accompanying editorial in the BMJ, Professor Anne Tjonneland
from the Danish Cancer Society, said whole grain products should be
made more appealing to shoppers. "To increase the intake of these
foods in Western countries, the health benefits must be actively
communicated and the accessibility of whole grain products greatly
improved, preferably with a simple labelling system that helps
consumers to choose products with high whole grain contents."

Cancer of the large bowel, also known as colorectal cancer, is a
common form of cancer in developed countries - but occurs much less
frequently in the developing world.

--

Chris

T2 DX'd 2002, D&E, HbA1c 5.7, BMI 21
Lipids:Tot 4.6 HDL 1.5 LDL 2.8 Tri 0.7
Chris,
Thanks, that's good summary discussion of the issue.
My main reticence on using a true low carb diet is just the issues
discussed above. The usual response on ASD has been that vegetable/
fruit fiber is abundant and grain fiber is not necessary. It appears
that may not be the case.
This also dovetails nicely with the discussion a few months ago (you
participated) on colon heatlh, butyrate and fiber/resistant starch.

But you can eat the grain fibre without eating the grain, i.e. get
this fibre on a low carb diet if that's what you want, just by using
bran supplements. As many of the people in these studies of the
butyrate benefits did.

--
Chris Malcolm

Yep, but that's not what's been shown to work. It's whole grain with
the bran, germ and all the other stuff.

If you want to make the assumption that all that's need to get the
benefits fine, but your taking a leap that's not supported by
evidence.

Of course, but "not supported by the evidence" is often
misunderstood. Is it a leap which is contradicted by the evidence? Or
is it a leap which is consistent with the evidence?

--
Chris Malcolm

.

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