Omega-3 polyunsaturated fatty acid supplements have always been linked with good heart health. People consuming the pills were believed to be at low risk of suffering a heart attack.

The theory supporting the fact explained that fish oil supplements help the blood become smooth and reduces the blood pressure level, which in turn lowers the risk of cardiovascular disease and strokes.

However, a recent study, published in the Journal of the American Medical Association (JAMA), has opposed the theory, after thoroughly studying the findings of 20 different studies, and stated that the results have to been able to provide with enough evidences to support the fact that the supplement can be included in daily diet to avoid strokes or heart attacks.

Researchers considering the study, which included nearly 70,000 patients, asserted that the supplements had no link with lowering of mortality rates associated with cardiovascular disease.

Dr. Evangelos Rizos, of the University Hospital of Ioannina in Greece, said: "Our findings do not justify the use of omega-3 as a structured intervention in everyday clinical practice or guidelines supporting dietary omega-3 polyunsaturated fatty acid administration".

However, Health Supplements Information Service has raised queries over the significance of the study, stating that these supplements have been found effective enough in reducing risk of dying early by 28% and improving blood vessel function.