Omega-3: More Important Than Smoking for Health
"If I could recommend one supplement for overall health, it would be omega-3s.
The research on their benefits is overwhelming."
—Dr. Mark Hyman
You already know smoking is one of the worst things you can do for your health. But what if I told you that your omega-3 levels might be just as important when it comes to longevity? This blew me away when I first learned of it and it spurred me to include it in my list of top ways to improve your health that go beyond the obvious.
Let's dive into why these fats have such a profound impact on your health and what to do abot it.
The Omega-3 Index and Mortality Risk
For decades, researchers have explored how diet influences longevity, but few nutrients have shown as strong a connection to lifespan as omega-3s. A groundbreaking study from the Framingham Offspring Cohort revealed that omega-3 levels in red blood cells were just as powerful at predicting early death as smoking. That’s right—having low omega-3s could put you at similar risk as lighting up a cigarette every day. The study analyzed 2,240 participants over 11 years, comparing their omega-3 status to traditional risk factors like smoking, cholesterol levels, and hypertension. The results? People with higher omega-3 levels lived longer, even when controlling for other health factors.
The research also found that those in the highest quintile of omega-3 levels were 33% less likely to die during the follow-up period compared to those in the lowest quintile. Moreover, a 1-quintile increase in the Omega-3 Index was associated with an additional 1.18 years of life expectancy, making it a significant predictor of longevity. That means, going from the lowest quintile to the highest could add years to your life. Researchers identified an optimal Omega-3 Index of 8% or higher, with levels below 4% being considered dangerously low.
Additional Benefits of Omega-3s
While their longevity-boosting benefits are what I wanted to highlight today, the benefits of omega-3 to way beyond longevity. In fact, omega-3 impacts nearly every system in the body.
One of the most well-documented advantages is their role in brain health and cognitive function. DHA, one of the primary omega-3 fatty acids, is a major structural component of brain tissue and plays a crucial role in memory, learning, and neuroprotection. Studies have shown that higher omega-3 intake is associated with a lower risk of Alzheimer’s disease, improved cognitive function, and reduced age-related brain shrinkage. Additionally, omega-3s are powerful mood stabilizers, with research demonstrating their ability to reduce symptoms of depression, anxiety, and even bipolar disorder. They also contribute to joint health, reducing symptoms of rheumatoid arthritis and other inflammatory conditions by helping to decrease stiffness and pain. Furthermore, omega-3s have been linked to better sleep quality, improved eye health, and even enhanced athletic performance by increasing oxygen efficiency and reducing exercise-induced inflammation. The benefits of these essential fats go far beyond just heart health and longevity—optimizing your omega-3 intake is one of the most impactful ways to support your overall well-being.
Omega-3 vs. Omega-6: The Crucial Ratio
But it’s not as simple as popping an omega-3 pill each morning. It comes down to the balance between omega-3 and omega-6 fats. The modern Western diet is drowning in omega-6s from processed foods, industrial seed oils, and fried foods. It's not uncommon to see an omega-6 to omega-3 ratio of 20:1 or higher in many people. Our hunter-gatherer ancestors, meanwhile, had ratios closer to 1:1 to 2:1. This imbalance fuels chronic inflammation and contributes to conditions like heart disease, metabolic dysfunction, and cancer.
Researchers at UCLA wanted to learn how modifying this omega-6 to omega-3 ratio would impact cancer treatment. So, they embarked on a clinical trial, CAPFISH-3, which specifically looked at men with early-stage prostate cancer and how this ratio affected tumor growth. The intervention group, which increased omega-3 intake while reducing omega-6 consumption, showed a 15% decrease in cancer cell proliferation over a year. Meanwhile, the control group, who kept their omega-6-heavy diet, saw a 24% increase in cancer cell growth. That’s a massive difference for something as simple as switching up the fats in your diet.
Researchers in the CAPFISH-3 trial emphasized the importance of maintaining an omega-6 to omega-3 ratio below 4:1, as this balance significantly contributed to reduced inflammation and better health outcomes; however, a balance closer to 2:1 or even 1:1 may be optimal for long-term health and disease prevention.
How to Improve Your Omega-3 Levels
Improving your omega-3 levels comes down to two main factors. Reduce omega-6 intake so that you’re omega-6 to omega-3 ratio improves and increase your omega-3 intake.
1. Reduce Omega-6 Intake
Cut back on processed foods, fried foods, and anything made with industrial seed oils:
Know the “Hateful 8”: The 8 worst inflammatory fats are soybean oil, corn oil, canola oil, cottonseed oil, sunflower oil, safflower oil, grapeseed oil, and rice bran oil. Some of the obvious culprits that contain these on their ingredient lists are chips, crackers, frozen meals, and baked goods.
Be aware of sneaky sources: The foods that tend to fly under the radar when it comes to omega-6 as an ingredient are commercial salad dressings, mayonnaise, nut butters, cereal, trail mix, packaged snacks, fried foods, and many foods served in restaurants. There are many better alternatives, including Primal Kitchen (use the promo code MINDBODYDAD for a 10% discount).
Stop using vegetable oils. Here are the three best alternatives.
Eat more whole foods.
2. Increase Omega-3 Intake
Focus on DHA and EPA: Prioritize the two most crucial forms—docosahexaenoic acid (DHA) and eicosapentaenoic acid (EPA)—which offer the greatest health benefits, far surpassing plant-based omega-3s like alpha-linolenic acid (ALA).
Eat more omega-3-rich foods: Focus on cold-water fatty fish like salmon, mackerel, and sardines, as well as shellfish (especially oysters) and fish roe, which are among the best sources of DHA and EPA. While plant-based sources like flaxseeds, chia seeds, and walnuts contain ALA, the body converts less than 5% of it into usable DHA and EPA. To ensure optimal intake, prioritize fatty fish or a high-quality fish oil supplement instead.
Consider a high-quality fish oil supplement: If you’re not regularly eating fish, supplementation is a smart move. Just make sure to choose a high-quality product that’s been tested for purity and freshness—rancid fish oil won’t do you any favors.
My recommendation: Primal Blueprint Omegas & PerformanceLab Omega 3
3. Check your Omega-3 Index:
One option is to talk to your doctor; another is to buy a certified kit from Amazon. Aim for an index above 8% for optimal health.
Takeaway
The importance of omega-3s goes far beyond just another health trend—they are a fundamental component of longevity, brain function, heart health, inflammation control, and even cancer prevention. The fact that low omega-3 levels can be as strong a predictor of early death as smoking should be a wake-up call.
Most people today are consuming too much omega-6 and not nearly enough omega-3, leading to chronic inflammation and a higher risk of disease. The good news? This is completely within your control. By reducing omega-6 intake (cutting back on processed foods and industrial seed oils), increasing omega-3 consumption (through fatty fish or high-quality supplements), and testing your Omega-3 Index, you can dramatically improve your health and longevity.
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