Thursday, April 9, 2009

Food that help prevent Cancer


Grapes and Grape Juice

Both grapes and grape juice are rich sources of resveratrol, a specific type of natural plant chemical that belongs to a much larger group of plant chemicals called polyphenols.
The skin of the grape contains the most resveratrol, and red and purple grapes contain significantly more resveratrol than green grapes. Grape jam and raisins contain much smaller amounts of this phytochemical. Wine also contains resveratrol. However, with AICR’s second expert report noting convincing evidence that alcohol is associated with increased risk for cancers of the mouth, pharynx and larynx, esophagus, breast (pre- and postmenopausal) and colon and rectum (in men), wine is not a recommended source of resveratrol.
Scientists believe that polyphenols in general and resveratrol, in particular, possess potent antioxidant and anti-inflammatory properties. In laboratory studies, resveratrol has been able to prevent the kind of damage known to trigger the cancer process in cell, tissue and animal models.
Other laboratory research points to resveratrol’s ability to slow the growth of cancer cells and inhibit the formation of tumors in lymph, liver, stomach and breast cells. Resveratrol has also triggered the death of leukemic and colon cancer tumors.
In one series of studies, resveratrol blocked the development of skin, breast and leukemia cancers at all three stages of the disease (initiation, promotion and progression).


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Friday, April 3, 2009

Authors' Quotes on Resveratrol

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Resveratrol is a naturally occurring phytoalexin produced by some higher plants in response to injury or fungal infection. Phytoalexinsare chemical substances produced by plants as a defense against infection by pathogenic microorganisms, such as fungi. Alexin is from Greek, meaning to ward off or to protect. Resveratrol may also have alexin-like activity for humans.
- PDR for Nutritional Supplements by Sheldon Saul Hendler and David Rorvik


Found in many plants as a phytoalexin, resveratrol is abundant in the skins of red grapes (Vitis vinifera). It has been suggested that resveratrol underlies the phenomenon known as the "French paradox." Wine is the most notable dietary source of this compound; a fluid ounce of red wine contains an average of 160 pg of resveratrol.
- Medical Herbalism: The Science Principles and Practices Of Herbal Medicine by David Hoffman, FNIMH, AHG

Grape juice contains resveratrol, as does cranberry juice, but at levels that are ten times less than those in red. Resveratrol content in different food and beverages: (uG 100 G), OyG/125 ML)Grapes 1,500, Red wine 625, Peanuts 150, White wine 38, Peanut butter 50, Grape juice 65, Blueberries 3, Cranberry juice 65, Raisins 0.01; resveratrol concentration in red wine varies greatly from one grape variety to another and from one region to another, with values ranging from 1 to 13 mg/l.
- Foods that Fight Cancer by Richard Beliveau, Ph.D. and Denis Gingras, Ph.D.

Source: NaturalNews (www.naturalnews.com)



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Tuesday, March 31, 2009

Resveratrol appears to have positive effects in brain functions.

A glass of red wine? is the drink that help you think

by Fiona Macrae

Wonder ingredient: Resveratrol in red wine increases blood flow to the brain, helping you think

It's the perfect excuse to have another glass of Chianti - research has shown that drinking red wine helps you think.

Men and women did better in mental arithmetic tests after being given resveratrol, the 'wonder ingredient' in red wine.

It is thought that the plant chemical - said to have abilities from burning off junk food to warding off heart disease - increases blood flow to the brain.

Northumbria University researchers set 24 healthy adults a series of tests before giving them a resveratrol pill or a dummy tablet.

When they were tested again, those that had taken resveratrol performed better, the British Psychological Society's annual conference will hear today.

Other tests confirmed that the drug, which is found in grape skins as well as raspberries, blueberries, cranberries and peanuts, widened blood vessels, boosting the brain's blood supply.

Researcher Emma Wightman said: 'It is interesting that a component you come across in many everyday foods can have a positive effect on brain function.'

Miss Wightman is repeating the experiment with smaller amounts of resveratrol, to find out just how much or how little is needed to achieve the effect.

Last year, researchers unveiled a drug based on resveratrol that was said to allow people to eat as much junk food as they liked without putting on a pound.

The drug - known only as SRT1720 - fools the body into thinking it has to burn off fat to survive.

Other studies have linked resveratrol with fighting old age, cancer, obesity, diabetes and Alzheimer's disease.

It is also claimed that just half a glass of red wine a day can greatly cut the odds of death from heart disease.

Source: MailOnline. www.dailymail.co.uk


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