Heart surgeon with 25 years of experience explains what happens when your omega-3 levels are low: ‘15-30% higher risk…’

A significant portion of the American population may be unknowingly deficient in omega-3 fatty acids, potentially increasing their risk of cardiovascular issues. This concern, highlighted by a cardiothoracic surgeon, underscores the importance of understanding omega-3 levels and taking steps to optimize them for long-term health.

The Scope of the Deficiency

According to Dr. Jeremy London, a board-certified cardiothoracic surgeon with over 25 years of experience, approximately 80 to 90 percent of Americans fall below the optimal omega-3 index needed for effective cardiovascular protection. Dr. London shared this information in an Instagram video on September 22, 2025, noting that even his own wife was found to be deficient upon testing.

Did You Know? Having a low omega-3 index has been linked to a 15 to 30 percent higher risk of cardiovascular events and mortality compared to those with higher levels.

Why Omega-3s Matter

Omega-3 fatty acids, specifically EPA and DHA, play a crucial role in maintaining heart health. Dr. London explains that these essential fats help lower triglyceride levels, reduce inflammation, and improve the function of the endothelium – the inner lining of blood vessels.

Potential Health Risks of Low Omega-3 Levels

Low levels of omega-3 fatty acids have been associated with several serious health concerns, including:

Coronary heart disease (CHD) mortality
Cardiovascular disease (CVD) events
All-cause mortality
Early-onset coronary atherosclerosis

Expert Insight: The widespread deficiency in omega-3s suggests a potential public health issue, as low levels are demonstrably linked to increased risks of serious cardiovascular outcomes. This highlights the need for greater awareness and proactive steps to address this nutritional gap.

Improving Omega-3 Levels

Fortunately, Dr. London suggests relatively simple steps individuals can take to improve their omega-3 index. These include increasing consumption of fatty fish like salmon, mackerel, and trout, and considering high-quality omega-3 supplementation.

Frequently Asked Questions

Why should I be concerned about my omega-3 levels?

According to Dr. London, low omega-3 levels are linked to a higher risk of heart disease and poorer cardiovascular outcomes, potentially increasing the risk of cardiovascular events and mortality by 15 to 30 percent.

What are EPA and DHA?

EPA and DHA are specific types of omega-3 fatty acids that have been shown to support heart health by lowering triglyceride levels, reducing inflammation, and improving blood vessel function.

What are some practical ways to increase my omega-3 intake?

Dr. London recommends increasing your intake of fatty fish such as salmon, mackerel, and trout, or considering high-quality omega-3 supplementation.

Considering the potential impact of omega-3 levels on cardiovascular health, what steps will you take to assess and optimize your intake?