American doctors found that fish oil and vitamin D in the most common dietary supplements did not reduce the risk of cardiovascular disease and cancer, world media reported. In higher doses, which are prescribed by doctors, however, fish oil helps people with high triglycerides and reduces the risk of death from cardiovascular disease.
Professionals welcome the results of two studies presented at the conference of the American Association of Cardiologists. They say this is a guideline for new treatment options for hundreds of thousands of patients.
About 10 percent of Americans take fish oil supplements. Still, they use vitamin D, although so far there has been little research on the benefits of vitamin D.
"Vitamin D adherents claim it's useful for all, but in this particular study, vitamin D has proven to be nothing," Dr. James Stein, a cardiologist at the University of Wisconsin-Madison, who was not involved in the study.
Fish oil, also known as omega-3 fatty acids, is found in salmon, tuna, and several other fish. This decreases triglycerides and reduces inflammation. There are various types of fish oil with different dominant fatty acids.
With one study, doctors from Brigham and Womens Hospital in Boston tracked the effects of 4 gram fish oil supplements, which are only available by prescription. This study involved 8,000 patients with high triglycerides and a high risk of cardiovascular problems who had used statins. After five years, 17 percent of addicts survived accidents – heart attacks, strokes, arterial occlusion that needed medical intervention, patients treated with placebo were 22 percent. This means that high-fat fish supplements reduce the risk of cardiovascular events by up to 25 percent, said Zdrave.to. However, it may have side effects such as arrhythmias.
The second study, conducted at the same hospital, with a lower daily dose of 1 gram of fish oil, involving 26,000 healthy volunteers, did not show a significant difference between the placebo group and the study subjects, even though the first infarction was less.
The second team also examined the effects of vitamin D supplements. Study participants took 2000 international vitamin units. D3 or placebo for five years each. The results show that "sun" vitamins do not affect the incidence of heart attacks, strokes or cancer, even though the latter has decreased slightly.