Denver, Colorado – A recent study suggests that the regular use of fish oil supplements may not be as beneficial as once thought for individuals with good cardiovascular health. The study found that taking fish oil supplements may actually increase the risk of first-time stroke and atrial fibrillation, a type of irregular heartbeat.
The research, published in the BMJ Medicine journal, analyzed data on over 415,000 individuals aged 40 to 69 participating in the UK Biobank study. The participants, followed for an average of 12 years, reported regular use of fish oil supplements. Results showed that for those without existing heart issues, the use of fish oil supplements was linked to a 13% higher risk of developing atrial fibrillation and a 5% heightened risk of experiencing a stroke.
Cardiologist Dr. Andrew Freeman from National Jewish Health in Denver commented on the study, pointing out that over-the-counter fish oil supplements are not typically recommended by medical societies due to purity and consistency issues, as well as potential contaminants like mercury found in fish.
The study also highlighted the benefits of fish oil for individuals with pre-existing heart disease. Those with heart conditions at the beginning of the research had lower risks of progressing from atrial fibrillation to a heart attack or heart failure to death when regularly using fish oil supplements.
Experts suggest that prescription versions of fish oil, such as Vascepa and Lovaza, are preferred for individuals with high triglyceride levels and cardiovascular disease risk. However, even in prescription strength, concerns about the risk of atrial fibrillation and stroke remain present.
Furthermore, preventive neurologist Dr. Richard Isaacson recommends testing for omega-3 fatty acid levels before considering fish oil supplementation, emphasizing the importance of obtaining nutrients from food sources like sardines, wild-caught salmon, chia seeds, and walnuts. He also advises caution in purchasing over-the-counter fish oil supplements, as purity and quality can vary significantly among brands.
In conclusion, while fish oil may still have a role in improving health for individuals with existing conditions, the days of indiscriminately taking fish oil supplements may be over. It is essential to consult with a healthcare provider before starting any supplementation regimen and to prioritize obtaining nutrients from whole food sources.