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Cocoa flavanols from dark chocolate halt memory decline during aging

Thursday, August 23, 2012 by: John Phillip
Tags: cocoa, flavanols, memory decline

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(NaturalNews) Extensive research over the past decade has demonstrated the critical importance of natural compounds known as flavanols from foods including blueberries, grapes, green tea, apples, onions, broccoli and dark chocolate. Flavanols support cellular and metabolic activities throughout the body by providing antioxidant support and squelching inflammation, the root cause of the vast majority of deadly chronic illnesses.

Statistical data shows that every year, nearly six percent of aging adults over the age of 70 will develop mild cognitive impairment; a condition that frequently progresses to dementia and in many individuals, onto a devastating diagnosis of Alzheimer's disease. Researchers reporting in the American Heart Association journal, Hypertension found that eating cocoa flavanols daily may improve mild cognitive impairment.

In the past, studies have shown that cocoa flavanol consumption can lower the risk of developing dementia, and this latest science supports the notion that regular consumption of dark chocolate may act directly on brain structure and function by protecting neurons from injury, improving metabolism and their interaction with the molecular structure responsible for memory.

Cocoa flavanols boost memory and cognitive function by improving insulin sensitivity

To conduct this research, the study team assembled a cohort of 90 elderly participants with mild cognitive impairment. Participants were randomized to drink a dairy-based cocoa flavanol mixture containing concentrations ranging from 990 mg (highest) to 520 mg (intermediate) or 45 mg (lowest), daily for eight weeks. The diet was restricted to eliminate other sources of flavanols from foods and beverages other than the dairy-based cocoa drink. Cognitive function was examined by neuro-psychological tests of executive function, working memory, short-term memory, long-term episodic memory, processing speed and global cognition.

The researchers found that tests to assess working memory and the ability to relate visual stimuli to motor responses were significantly improved in the high cocoa flavanol group as compared to the lowest intake group. The study also determined that participants drinking higher levels of flavanol drinks had significantly improved cognitive scores than those participants drinking lower levels. Most important, high and intermediate intake group members showed improved markers for insulin resistance, oxidative stress and blood pressure relative to the low consumption participants.

The study authors concluded "This study provides encouraging evidence that consuming cocoa flavanols, as a part of a calorie-controlled and nutritionally-balanced diet, could improve cognitive function... the positive effect on cognitive function may be mainly mediated by an improvement in insulin sensitivity." Prior research bodies suggest consuming the equivalent of one square of dark chocolate (minimum 85 percent cocoa flavanols) daily or supplementing with 500 to 1,000 mg of a standardized shake or capsule to improve memory and lower the risk of dementia during aging.

Sources for this article include:

http://hyper.ahajournals.org
http://www.sciencedaily.com/releases/2012/08/120813173205.htm
http://www.medpagetoday.com/Cardiology/Dementia/34179
http://www.medicalnewstoday.com/articles/249019.php

About the author:
John Phillip is a Certified Nutritional Consultant and Health Researcher and Author who writes regularly on the cutting edge use of diet, lifestyle modifications and targeted supplementation to enhance and improve the quality and length of life. John is the author of 'Your Healthy Weight Loss Plan', a comprehensive EBook explaining how to use Diet, Exercise, Mind and Targeted Supplementation to achieve your weight loss goal. Visit My Optimal Health Resource to continue reading the latest health news updates, and to download your copy of 'Your Healthy Weight Loss Plan'.

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