Omega 3 Supplements: Do not Reduce Heart Risk, Stroke or Death – Medical News

A systematic review of evidence on omega-3 supplements questioned belief The new Cochrane review combined the results of 79 randomized trials involving 112,059 people and evaluated the effects of an additional intake of omega 3 fats, with omega 3 usual or less, in diseases of the heart and circulation. Some of the participants were in good health while others had existing conditions.

Twenty-five studies were rated as very reliable because they were well designed and conducted. These covered the three main types of omega 3 fatty acids: alpha-linolenic acid (ALA), which is usually found in the fats of plant foods, such as nuts and nuts. seeds; and eicosapentaenoic acid and docosahexaenoic acid, collectively referred to as long chain omega 3 fatty acids, found naturally in oily fish, such as salmon, and fish oils, including oil. Cod liver.

Increased intake of long chain omega 3 provides little or no benefit in most outcomes.

Found "evidence of great certainty" that long-chain omega-3 fatty acids have little or no significant effect on the risk of death of any cause, which was 8, 8% in people who had increased their consumption of omega 3 fatty acids, compared to 9% in people in the control groups

also found that taking more fat Long chain omega 3, mainly by through supplements, probably do not make or little difference with respect to the risk of cardiovascular events, cardiac deaths, cardiac events c With regard to the consumption of more ALA by the food or supplements, the review revealed that it probably has little or no effect on cardiovascular death or death of any cause, which reduces the risk of heart irregularities of 3.3% to 2.6%.

The review team found that reductions in cardiovascular events badociated with ALA were so low that about 1,000 people would need to increase their fat intake for that one of them benefits from it. Similar results were found for cardiovascular death.

They did not find enough data from the studies to be able to measure the risk of bleeding or blood clots from ALA

Lee Hooper, lead author of Cochrane. University of East Anglia, said: "We can count on the results of this review in against the popular belief that long-chain omega-3 supplements protect the heart." This great systematic review included information from thousands of people for long periods, despite all this information, we see no protective effect . "

Tom Sanders, Emeritus Professor of Nutrition and Dietetics at King & # 39; s College London, said that the review had a" significant limitation "in that it did not have a" major limitation "in that has not been able to allow the increase in consumption of omega-3 fatty acids over the last 20 years due to changes in food production.

He added that most of the tests examined were performed in patients with pre-existing cardiovascular disease, which was an additional limit when they were extrapolated to the prevention of heart attacks in the general population.

Cohort studies of Previous observations, which this review does not consider, suggest a threshold intake where intakes below 1 g / d ALA are badociated with an increased risk of fatal heart disease. it is unlikely that ap Higher ports at this level have an added benefit. Because you need a small amount of an essential nutrient, it does not follow that more is always better. "

Sanders added that the study did not provide evidence that current dietary advice to eat two servings of fish a week., One of them bold, they should change. [19659014]! Function (f, b, e, v, n, t, s) {if (f.fbq) returns; n = f.fbq = function () {n. CallMethod?
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