Sayer Ji
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Green Tea Compound Reduces Pancreatic Cancer Risk

Green Tea Compound Reduces Pancreatic Cancer Risk

Green tea may well be the healthiest drink on the planet.  For many, the tea and its extracts hold great promise as potential treatments for cancer. But scientists had never identified how green tea helps reduce the risk of cancer.

Now researchers from Los Angeles Biomedical Research Institute at Harbor-UCLA Medical Center have figured out how green tea works. 

In a study published online by the journal Metabolomics[i] they explain how an active constituent in green tea changes the metabolism of cancer cells. 

The researchers found that epigallocatechin gallate (EGCG), a powerful antioxidant found in green tea, affects enzymes critical to the metabolism of pancreatic cancer cells. 

Pancreatic cancer displays an elevated expression of the critical enzyme lactate dehydrogenase A (LDHA).  Other human cancers also show elevated LDHA activity.   

The researchers found EGCG inhibited LDHA and disrupted the cellular metabolic network of the cancer.

They concluded that EGCG reduced the risk of cancer by suppressing the activity of LDHA and disrupting the metabolic functions in the cancer cells. 

The researchers believe using foods to alter cellular metabolism can have an impact on cancer.  One of the authors, Wai-Nang Lee, MD, said:

"By explaining how green tea's active component could prevent cancer, this study will open the door to a whole new area of cancer research and help us understand how other foods can prevent cancer or slow the growth of cancerous cells."

Earlier studies had shown that EGCG can induce programmed cell death in pancreatic cancer

Other studies show EGCG:

By far the richest food source of EGCG is green tea. But make sure your drink the real stuff.  The decaffeinated version contains much less EGCG.  But the caffeine in green tea is fairly mild.  One cup contains only about 20 milligrams of caffeine, compared to about 80 milligrams in a cup of coffee. 

Other foods also contain lesser amounts of EGCG.  In 2007 the USDA issued a report on the flavonoid content of certain foods.  It found that apples are also rich in EGCG.  Fuji apples were the best of the apple varieties tested.  They contain up to 6.26 mg of EGCG per 100 g of apple. 

Raw blackberries are another good source offering over 7 mg of EGCG per 100 grams. Red wine and chocolate also contain good amounts.  Other foods containing trace amounts of EGCG include strawberries, peanuts, peaches, avocados, plums, onions and raspberries.

Besides cancer green tea may help prevent and perhaps even treat neurodegenerative disorders such as Alzheimer's, Parkinson's and Huntington's disease.

Green tea has also been shown to help prevent osteoporosis

For more information on its health benefits, visit GreenMedInfo's page on green tea



[i] Qing-Yi Lu, Lifeng Zhang, Jennifer K. Yee, Vay-Liang W. Go, Wai-Nang Lee. Metabolic consequences of LDHA inhibition by epigallocatechin gallate and oxamate in MIA PaCa-2 pancreatic cancer cells. Metabolomics, 2014; DOI: 10.1007/s11306-014-0672-8

Disclaimer: This article is not intended to provide medical advice, diagnosis or treatment. Views expressed here do not necessarily reflect those of GreenMedInfo or its staff.
Sayer Ji
Founder of GreenMedInfo.com

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