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Omega-3 fatty acids are versatile in their health and have a beneficial effect on blood lipid levels, blood flow, blood pressure and heart rate, among other things. In order to ensure an adequate supply of omega-3 fatty acids, many people take special preparations that often contain fish or flaxseed oil.
Researchers at the Cochrane Collaboration Research Network found that dietary supplements in a survey: According to the results, a significant positive effect on heart health could not be established.
A summary study has a questionable effect
79 individual studies examining data from 112,000 people in North America, Europe, Australia and from Asia were collected and badyzed as part of the study. In most studies, subjects took omega-3 supplements daily for a longer period, but some studies focused on the health effects of fish high in fat. Other researchers have studied the effect of tri-unsaturated alpha-linolenic acid derived from plants.
The badysis of all the data collected by the researchers showed that omega-3 supplements did not reduce the risk of heart attacks and stroke. The researchers were unable to detect a significant effect on heart health in preparations – with one exception: alpha-linolenic acid appears to have little protection against cardiac arrhythmias. In study participants who took this increased omega-3 fatty acid, the risk of arrhythmia increased from 3.3% to 2.6%.
Scientists do not doubt the results
"We are convinced of the results of this study, which contradicts the common belief that long-chain omega-3 fatty acids protect the heart," said Lee Hooper of the University of East Anglia in a statement because, although the study included large amounts of data over a long period, the team found no protective effect.
But why do so many people believe in the benefits of omega-3s? According to Hooper, this is mainly scientific research in the 1980s and 1990s: "We all believed for a long time, but since then, no study has confirmed the results."
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No recommendation for preparations
The study director advises against taking omega-3 fatty acids in capsule form – and blin "If you swallow fish oil tablets, you might think that you have already done enough good and that you can rest now. "
Tim Chico, a non-involved in the study at the University of Hoopers Evaluation Interview with the" British Guardian too. According to experts, it is wrong to believe that a single component of the diet can reliably protect against cardiovascular disease.
In addition, Chico draws consumers' attention to the question of omega-3 preparations at good value: It costs a lot of money, "he said, adding that 39, instead of investing huge sums of money, he suggests investing the money "in vegetables."
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