Omega-3s Why Most People Aren’t Getting Enough and Why It Matters
By Natalie Samson
Omega-3 fatty acids are essential fats that play a critical role in brain health, cardiovascular function, and inflammation regulation. Yet, most people are significantly deficient, even when they think they are “getting enough” from diet or supplements.
Understanding why omega-3s matter and how to ensure adequate intake can have meaningful implications for long-term health.
The Importance of Omega-3 Fatty Acids
Omega-3s, particularly EPA and DHA, are essential fats the body cannot produce efficiently on its own. They must come from diet or high-quality supplementation. These fats support multiple systems in the body:
Heart Health
Clinical research demonstrates that omega-3s may reduce the risk of cardiovascular death by approximately twenty-five percent. The REDUCE-IT trial (Bhatt et al., 2019) highlighted their potential to improve heart outcomes when used in the right dose and quality.
Brain Health and Cognitive Function
Omega-3s protect against cognitive decline and may lower the risk of Alzheimer’s disease, particularly in individuals carrying the APOE4 gene (Joffre et al., 2016). DHA is a structural component of brain cells, helping maintain neural integrity and function over time.
Inflammation Control
Chronic inflammation is a driver of aging and numerous diseases, including cardiovascular disease, diabetes, and neurodegeneration. Omega-3s help reduce inflammatory signaling, supporting overall resilience and long-term health (Calder, 2017).
Why Most People Don’t Get Enough
The standard Western diet is typically low in omega-3s and high in omega-6 fatty acids, which can further tip the balance toward inflammation. Even following general dietary guidelines often falls short of achieving an optimal omega-3 index. Research suggests that an omega-3 index of eight to eleven percent is associated with the best cardiovascular and cognitive outcomes, but this level is rarely reached without deliberate intake from high-quality sources (Harris et al., 2009).
How to Ensure Adequate Omega-3 Intake
Focus on High-Quality, Fresh Sources
Omega-3s are sensitive to heat, light, and time. Supplements that have been sitting on a shelf for years may be rancid and ineffective.
Include Fatty Fish in Your Diet
Fatty fish such as salmon, sardines, mackerel, and anchovies are rich in EPA and DHA. Aim for at least two servings per week, prepared with minimal heat to preserve fatty acids.
Supplement Wisely
High-quality omega-3 supplements can help bridge gaps, especially for individuals who do not regularly consume fish. Look for products that specify freshness testing, purity, and the amount of EPA and DHA per serving.
Check Your Omega-3 Index
Testing your omega-3 index can help determine whether your intake is sufficient and guide personalized supplementation strategies.
My Clinical Perspective
Omega-3 fatty acids are foundational to both brain and heart health. Simply “taking a fish oil occasionally” is rarely enough to achieve optimal benefits. Ensuring consistent intake of fresh, high-quality EPA and DHA in the right amounts is key for inflammation control, cognitive support, and cardiovascular resilience.
For most people, a proactive approach to omega-3 intake is not optional—it is essential for long-term prevention and wellness.
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