HEALTH MANAGEMENT. Study clouds image on Omega-3 fatty acids and heart health

By Adam Marcus
NEW YORK | September 9, 2011 1: 16 pm EDT
NEW YORK (Reuters Health) - fatty acids such as food fish and certain plants can not prevent that heart disease as well as previously believed, a new study concludes.
Danish researchers who analyzed the diet of nearly 3,300 people found, that, usually people who reported, eat more fatty acids not less likely in time for the development of ischemic Herzkrankheit--d. h. supply of blood to the Herzen--as humans reduced, which consumes less of nutrients.
However, women who ate the Omega-3 fatty acids, often in fish and fish oil supplements, has apparently benefit. They had almost 40 percent lower risk of developing heart disease than women, which, in the least fat, food insights that are displayed in the American Journal of clinical nutrition.
The study of "important questions about the interactions of these nutrients with heart health, solves", said Alice Lichtenstein, Director of heart-circulation nutrition laboratory at Tufts University. But it shows show, studies, difficult to extrapolate the concentration on the eating habits of a single country are.
"Because food is ecological specific, you only can assume in a population observed necessarily right for another", said Lichtenstein Reuters Health.
U.S. giving food and Drug Administration said in 2004 "supportive but not conclusive" evidence that a person of Omega-3 fatty acids may reduce risk of heart disease. The agency recommended that people consume no more than three grams per day of the substance, with not more than two grams of which from dietary supplements.
In addition to Omega-3 fatty acids the current Danish study saw the effects of linoleic acid, and a similar substance, alpha-linolenic acid-both plant-about the risk of heart disease in 3.277 men and women live in the greater Copenhagen originate.
No topics had diagnosed with heart problems, when entering the study, gathered information about their eating habits, exercise and other lifestyle patterns.
After an average of 23.3 years ordinarily 471 participants developed ischaemic heart disease. -But only women who reported eating the most Omega-3 fatty acids some like 11.2 grams per day-seemed from the nutrient benefit. The risk of heart disease was 38% lower than that consumed women, less than 0.2 grams per day, the researchers found.
"High intake of Omega-3 fatty acids a significant cardioprotective effect among women," said MIA Sadowa Vedtofte, the National Institute of public health at the University of southern Denmark in Copenhagen and co-author of the study.
Vedtofte said, that men who ate more Omega-3 fatty acid-rich foods seemed win also protect against heart disease, but that the statistical differences were small, so that the effect could be due to chance. To answer the question more clearly, she added, which would have required more people study.
The estimated average daily intake of fatty acids by study participants was 1.2 g for women and 1.6 g for men, according to the researchers. This is slightly higher than in other studies, which have us fatty acid effects, but at least for women, equal to the recommended minimum.
Vedtofte said that she and her colleagues were "a little surprised" that the vegetable fatty acids, which she studied not appeared, to prevent heart disease.
The results of this study does not prove that the Omega-3 fatty acids benefit prevent heart disease, the significant also in women. Another factor that goes along with a fish-rich diet could for example also at work.
Lichtenstein said that should change basic advice for Americans not: a diet, rich in little meat, fruit and vegetables to the food. Even if fish oil proves not to protect against heart disease, she added, is "it no…" Reason for not including fish in the diet. "It can be a food that are displaced rich in saturated fatty acids."
Lichtenstein notes that the Danish considered only whether fatty acids against heart disease could protect study, whether they help with established in the prevention of cardiovascular events such as heart attacks and strokes in people were not heart disease.
"There are data showing that for people with established disease, they benefit" of supplements, she said.
A large US study with 20,000 volunteers is VITAL study (bit.ly/P3UO4), now under way examined whether vitamin can protect D and Omega-3 fatty acid supplements against heart disease, cancer and strokes in people with no history of such problems.

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