Omega-3 Benefits for Men: What to Know

What Are Omega-3 Fatty Acids?

Omega-3s are a category of polyunsaturated fats that play a structural role throughout the body. They make up part of the structures in cell membranes, supporting normal membrane function in tissues like the brain, retina, and heart.¹

EPA and DHA are the two forms most associated with health benefits, and both come primarily from fish.

A third form, ALA, is found in plant sources like walnuts and flaxseed, but the body only converts a limited amount of it into EPA and DHA—typically around 6% to EPA and less than 4% to DHA.² That limited conversion is exactly why direct intake through food or supplements is worth prioritizing, and it's the basis for most of the benefits of omega-3 fish oil for men.

Key Benefits of Omega-3 for Men's Health

Cognition and memory

The brain holds a particularly high concentration of DHA, which plays a role in normal cognitive function throughout adulthood.³ Because neural tissue depends so heavily on this fatty acid, consistent DHA intake is one of the more direct ways to support how the brain performs over time.

Immune health

Immune cells also carry meaningful concentrations of EPA and DHA, and both fatty acids contribute to how the innate and adaptive immune system normally functions.⁴

Heart health

EPA and DHA support normal blood vessel function and help maintain vascular tone, which forms much of the scientific basis behind fish oil benefits for men.⁵ It's also a big part of the answer to why fish oil is worth taking in the first place—heart health support holds up as a benefit at every stage of life, not just for older men.

Fish Oil vs. Cod Liver Oil vs. Krill Oil: What's Best for You?

Fish oil and cod liver oil

Fish oil and cod liver oil both deliver substantial amounts of EPA and DHA, but they come from different parts of the fish.

• Standard fish oil is extracted from the body tissue of fatty fish, such as anchovies, sardines, and mackerel, and concentrated specifically for omega-3 content.
• Cod liver oil, on the other hand, comes from the cod's liver, which means it naturally carries vitamins A and D along with its omega-3s.

The cod liver oil benefits for male health can be appealing for that reason, but it's worth tracking your total vitamin A and D intake if you're taking other supplements, since fat-soluble vitamins can build up.

If you're weighing the two, think about what else is in your supplement routine and whether added vitamins A and D fit into it.

Find more on Vitamins and Supplements.

Krill oil

Krill oil rounds out the third major option. Unlike fish oil, its omega-3s in krill oil are predominantly attached to phospholipids rather than triglycerides, and this structural difference has led some researchers to test whether it absorbs faster.

The benefits of krill oil for men are still debated in the research: one study found faster uptake with krill oil, while other head-to-head comparisons found no meaningful difference in bioavailability versus fish oil.⁶ In practice, the choice between krill oil and standard fish oil often comes down to cost and personal preference more than a clear scientific edge.

Watch the labels

Purity and sourcing matter too—wild-caught fish oil generally carries fewer contaminants than farmed alternatives, and molecular distillation is a marker of a well-processed product. Whichever you choose, triglyceride form (like what's used in AG Omega3) supports better absorption than other forms.

How to Incorporate Omega-3s Into Your Diet

Eating fatty fish like salmon, sardines, and mackerel a couple of times a week is the most direct route to getting EPA and DHA. If fish isn't part of your regular diet, algae-based DHA supplements offer a solid plant-based alternative, and standard fish oil supplements work well for most people who want a consistent daily source. When shopping for a fish oil supplement, prioritize:

• Molecular distillation, which helps reduce contaminants
• Third-party certification, such as NSF Certified for Sport® or International Fish Oil Standards (IFOS™)
• Wild-caught sourcing from small fish, which typically carry a lower contaminant load than larger predatory species
• Triglyceride form, which supports better absorption than other delivery forms

Taking your supplement with a meal that includes some fat can help support absorption. In addition to that, the exact time of day matters less than sticking to a routine, since consistency is what drives results, whether that's with breakfast or before bed.

Potential Side Effects and Considerations

Most men tolerate fish oil supplements without issue. A smaller number notice mild digestive discomfort or a fishy aftertaste ("fish burps"), which tends to show up more with lower-quality oils. A high-quality, molecularly distilled formula—especially one with a natural lemon flavor—can help minimize that. As with any supplement, consult your healthcare provider before use, especially if you take other medications or have existing health concerns.

How AG1 Supports Your Omega-3 Intake

AG Omega3 delivers molecularly distilled EPA and DHA sourced from wild-caught, small fish, supporting brain function, memory, heart health, and everyday immune function.* It's available both on its own and paired with CoQ10, a nutrient that plays a role in cellular energy production and also functions as an antioxidant, helping your cells manage everyday oxidative stress.* Since the body's natural CoQ10 production declines with age, AG Omega3 + CoQ10 was built to support both cellular energy and omega-3 intake in one formula.*

Both formulas carry NSF Certified for Sport® and IFOS™ certifications, are sourced from Friend of the Sea–certified fisheries, and use triglyceride form to support optimal absorption. If you're ready to add omega-3 support to your routine, visit AG1.

References:

1. Kidd PM. Omega-3 DHA and EPA for cognition, behavior, and mood: clinical findings and structural-functional synergies with cell membrane phospholipids. Altern Med Rev. 2007;12(3):207-227.
2. Gerster H. Can adults adequately convert alpha-linolenic acid (18:3n-3) to eicosapentaenoic acid (20:5n-3) and docosahexaenoic acid (22:6n-3)? Int J Vitam Nutr Res. 1998;68(3):159-173.
3. Dighriri IM, Alsubaie AM, Hakami FM, et al. Effects of omega-3 polyunsaturated fatty acids on brain functions: a systematic review. Cureus. 2022;14(10):e30091.
4. Gutiérrez S, Svahn SL, Johansson ME. Effects of omega-3 fatty acids on immune cells. Int J Mol Sci. 2019;20(20):5028.
5. Abeywardena MY, Head RJ. Longchain n-3 polyunsaturated fatty acids and blood vessel function. Cardiovasc Res. 2001;52(3):361-371.
6. Ramprasath VR, Eyal I, Zchut S, Jones PJH. Enhanced increase of omega-3 index in healthy individuals with response to 4-week n-3 fatty acid supplementation from krill oil versus fish oil. Lipids Health Dis. 2013;12:178.