You’ve probably heard of omega-3s—the healthy fats found in fish oil that support your brain, eyes, and heart.

But a new study just added something unexpected to the conversation…

When paired with strength training, omega-3 supplements may also help boost your physical performance.

Researchers found that combining these two habits led to improvements in cholesterol, inflammation, antioxidant levels, and brain chemistry—plus measurable strength gains in just a few weeks.

Sound impressive? It is.

But as always, there’s more to the story.

The study, published in Nutrients, followed 30 healthy men aged 18 to 30 who had been strength training for at least three years. All participants followed the same workout and diet plan—but only half were given daily omega-3 supplements (3,150 mg).

By the end of the trial, the omega-3 group experienced:

  • Lower LDL (bad) cholesterol and triglycerides
  • Reduced inflammation and better antioxidant capacity
  • Increased brain-boosting compounds like dopamine and serotonin
  • A 13.6% improvement in bench press and nearly 10% improvement in squat

That’s impressive even for seasoned athletes!

But before you rush out to stock up on fish oil, there are a few things to keep in mind.

First, this was a small, narrowly focused study. The participants were young, healthy, and already very active. It’s unclear whether the same results would apply to seniors, women, or people with chronic conditions.

Second, not all omega-3 supplements are created equal. Quality and dosage vary widely, and some may interact with medications—especially blood thinners.

That said, omega-3s do offer real, well-established health benefits for older adults—especially for heart, brain, and joint support. And when paired with regular exercise, even modest strength training, they may support better aging from the inside out.

Here’s how to safely incorporate them into your routine:

Focus on food first.
Fatty fish like salmon, mackerel, and sardines are rich in natural omega-3s. Walnuts, flaxseeds, and chia seeds also provide plant-based options.

Choose a reputable supplement (if needed).
If you don’t eat much fish, a high-quality fish oil or algae-based omega-3 supplement may help fill the gap. Look for brands with third-party testing for purity and potency.

Pair with strength-based movement.
You don’t need to bench press like a bodybuilder. Light weightlifting, resistance bands, or bodyweight exercises a few times per week can support muscle, bone, and brain health—especially when combined with healthy fats.

Omega-3s and exercise are each powerful on their own—but together, they may be even better.

Just be sure to talk with your doctor before starting any new supplement, especially if you’re taking medications or managing health conditions.

To stronger bodies and sharper minds,

Rachel Mace
Managing Editorial Director, e-Alert
with contributions from the research team

P.S. Omega-3s: A new health benefit REVEALED!

Sources:

Mammoser, G. (2025, July 12). Omega-3 Supplements Combined With Weightlifting May Improve Overall Health. Healthline; Healthline Media. https://www.healthline.com/health-news/omega-3-supplements-athletic-performance-study


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