For many seeking to maintain heart health, fish oil supplements have long been heralded as a valuable source of omega-3 fatty acids. However, a recent study raises concerns about their potential risks, particularly for individuals with good cardiovascular health.
According to the study published in the journal BMJ Medicine, regular use of fish oil supplements was associated with an increased risk of first-time stroke and atrial fibrillation among individuals without pre-existing heart conditions. Analyzing data from over 415,000 participants aged 40 to 69 in the UK Biobank study, researchers found that nearly one-third of those surveyed reported regular use of fish oil supplements over an average follow-up period of 12 years.
Dr. Andrew Freeman, director of cardiovascular prevention and wellness at National Jewish Health in Denver, remarked on the rarity of recommendations for over-the-counter fish oil supplements by professional medical societies, citing their lack of consistency, potential contaminants, and historical mixed results in research.
Interestingly, the study revealed a contrasting effect among individuals with pre-existing heart disease, where regular use of fish oil supplements was linked to a lower risk of certain cardiovascular events. However, even in these cases, caution is advised, with prescription versions of fish oil preferred for managing specific risk factors like high triglycerides.
Dr. Richard Isaacson, a neurologist specializing in Alzheimer’s prevention, emphasized the importance of scrutinizing omega-3 fatty acid levels before considering fish oil supplementation. He advocated for obtaining omega-3s from food sources, particularly from low-mercury fish like sardines and wild-caught salmon. Plant-based alternatives such as chia seeds and flaxseed were also highlighted, though their efficacy may vary.
For those opting for over-the-counter supplements, Isaacson stressed the significance of freshness and quality assurance. Recommending purchases from reputable companies and careful storage to maintain freshness, he underscored the lack of stringent regulation in the supplement industry, urging consumers to prioritize brands subjected to third-party testing for purity and potency.
While the debate surrounding fish oil supplements continues, the study’s findings prompt a reevaluation of their role in cardiovascular health management, with emphasis placed on informed decision-making and prudent consumption.