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Many people take omega-3 supplements designed to protect the heart and brain. A new study now raises serious doubts about the effects of fish and flaxseed tablets which, according to the results, have no significant effect on their health.
Omega-3 fatty acids are versatile and have a beneficial effect on blood lipids, blood flow characteristics, blood pressure and heart rate. 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 from the Cochrane Collaboration Research Network discovered that dietary supplements in a survey: The findings suggest that a significant positive effect on heart health could not be established.
A survey gives rise to doubts
79 individual studies examining data from 112,000 people in North America, Europe, Australia, and Asia. were collected and badyzed in the synthesis 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 of plant origin
The badysis of all the data collected by the researchers showed that Omega-3 dietary supplements did not reduce the risk of heart attack and stroke. The researchers found no significant effect on heart health – with one exception: alpha-linolenic acid appears to protect against cardiac arrhythmia to a minor degree. In participants taking this omega-3 fatty acid, the risk of arrhythmia increased from 3.3% to 2.6%.
Scientists do not doubt the results
"We are from the results of this study, Contrary to the popular belief that long-chain omega-3 fatty acids protect the heart, it is convincing," says Dr. Author of the Lee Hooper study from the University of East Anglia in a statement, because although the study includes large amounts of data over a long period
But why do so many people believe in the health benefits of omega-3 fatty acid pills? Hooper says it's mainly due to scientific research in the '80s and' 90s: "We all l & # 39; 39 have believed for quite a long time, but since then no investigation has confirmed the results. "
No recommendation for preparations
The study director advises against taking omega-3 fatty acids in capsule form – and to blindly rely on their effects:" By swallowing tablets of 39; fish oil, one would think that
Tim Chico, a disinterested cardiologist of study at the University of Sheffield, agrees with the evaluation of Hooper in a interview with the British Guardian. 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 the attention of consumers on the issue of omega-3 preparations at good value for money: Instead of investing huge sums of money for it , he advises in the interview that money prefers "investing in vegetables".
Judith Kerstgens
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