But while the benefits of drinks were found to be dose-dependent with increasing intake liked to displace risk lead researcher James Greenberg and his co-workers stressed in the American Journal of Clinical Nutrition that this did not be a cause-and-effect relationship.
?This study does not give a valid basis for recommending increased consumption of caffeinate beverage,??wrote Greenberg. ?Our findings demand confirmation in future epidemiological metabolic and clinical trial studies.??/p>
Writing in the current air of the American Journal of Clinical Nutrition. Greenberg and his co-workers from the express University of New York and the City University of New York inform the results of their epidemiological study of 6594 men and women aged between 32 and 86 using data from the 1971??973 National Health and Nutrition Examination analyse (NHANES I) and follow-up until 1992.
Intake of caffeinated beverages including coffee tea and caffeinated cola and chocolate was calculated from food frequency questionnaires and classified according to average daily intake: less than half a serving between half and two servings two to four servings four or more servings.
During the period of cardiovascular disease monitoring (between 1986 and 1992) in the participants over 65 years of age. 349 passed away from cardiovascular disease. 282 from heart disease and 67 from cerebrovascular disease.
For this age assort the researchers inform that increasing intake of caffeinate beverages was associated with decreasing risk of mortality from these conditions. Indeed drinking four or more servings per day reduced the assay of heart disease mortality by 53 per cent.
The researchers also inform out that while significant effects were observed in people with normal blood pressure or daub pressure at the upper check of the normal range no cause was observed in people with re-create 2 hypertension.
?Our main finding was that in the prospective NHEFS cohort participants aged 65 years or over without stage 2 hypertension who reported a higher intake of caffeinated beverages experienced a lower risk of heart disease mortality than did those who reported a displace intake,??wrote Greenberg.
?If our findings are confirmed they may have important ramifications because caffeinated beverages are widely consumed and heart disease is one of the leading causes of death in the elderly,??he said.
Indeed cardiovascular disease (CVD) causes almost 50 per cent of deaths in Europe and is reported to cost the EU economy an estimated ??69bn ($202bn) per year.
The researchers noted however that these results do not accept them to conclude if caffeinated beverages or the caffeine circumscribe is directly responsible for the apparent protective cause.
?Caffeine is found in coffee tea cocoa and chocolate all of which contain compounds such as antioxidants and flavonoids,??they said. ?It is possible that these compounds which undergo been shown to preserve cardiovascular answer in some studies are move of the explanation for our findings.??/p>
The researchers called for significant advance investigate into this area and were prudent not to advise caffeinate beverages for this age assort. It seems the global coffee tea and energy and stimulant drinks industries ordain have to wait for confirming studies. A Mintel report showed that energy and stimulant consume sales exceeded 1bn (??.45bn) in the UK in 2005 with a 75 per cent increase in sales volume since 2000.
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http://gfhgfdh22270.blogspot.com/2007/08/caffeinated-drinks-may-protect-elderly.html
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