(17-01-11) Green tea better at preventing cancer and dementia than previously thought

by S. L. Baker, features writer

(NaturalNews) For years, NaturalNews has covered the mounting research linking
green tea and its extracts to a host of disease-fighting benefits -- from
halting the progression of chronic lymphocytic leukemia (http://www.naturalnews.
com/029055_l...) and reducing the risk of cardiovascular disease to protecting
the oxygen-deprived brain from memory loss (http://www.naturalnews.
com/023375_g...) and preventing breast cancer (http://www.naturalnews.
com/025687_g...). It almost sounds too good to be true, right? Actually, a new
study has revealed that green tea is an even more incredible natural health
enhancer than anyone knew previously.

Scientists at Newcastle University in the United Kingdom have just discovered
that when green tea is consumed, the digestive process in the gut creates
powerful chemicals that work to protect the body against two of humankind's
most dreaded diseases -- Alzheimer's and cancer. The research, headed by Dr. Ed
Okello, was recently published in the academic journal Phytomedicine.

The British scientists set out to see if the protective properties attributed
to phytochemicals found in undigested, freshly brewed green tea are
substantially active in the body once the tea is consumed. Dr Okello explained
in a statement to the media that just because we eat or drink something that is
generally accepted to contain healthful properties, that doesn't mean these
compounds will actually be absorbed by the body.

"What was really exciting about this study was that we found when green tea is
digested by enzymes in the gut, the resulting chemicals are actually more
effective against key triggers of Alzheimer's development than the undigested
form of the tea," Dr Okello, of Newcastle's School of Agriculture, Food and
Rural Development, said in the press statement. "In addition to this, we also
found the digested compounds had anti-cancer properties, significantly slowing
down the growth of the tumor cells which we were using in our experiments."

Dr. Okello's Newcastle team worked in collaboration with Dr. Gordon McDougall
of the Plant Products and Food Quality Group at the Scottish Crop Research
Institute in Dundee where technology has been developed which simulates the
human digestive system. By using this high tech system, the researchers were
able to analyze what happens to green tea once it is digested.

Earlier research has already shown that natural compounds known as polyphenols
found in both black and green tea have neuroprotective properties. They bind
with two toxic compounds (hydrogen peroxide and a protein known as beta-
amyloid) known to play a role in the development of Alzheimer's disease. For
part of their new study, the research team conducted experiments in the lab
using cells exposed to varying concentrations of the different toxins as well
as digested green tea compounds. They also looked to see the impact of digested
green tea on cancer cells.

The results? The digested green tea chemicals prevented the Alzheimer's
disease-linked toxins from destroying normal cells. "We also saw them affecting
the cancer cells, significantly slowing down their growth," Dr. Okello stated.
"Green tea has been used in Traditional Chinese medicine for centuries and what
we have here provides the scientific evidence why it may be effective against
some of the key diseases we face today."

For more information:

http://www.ncbi.nlm.nih.gov/pubmed/...

News

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