Omega-3 (ALA): Role in the Body, Sources & Which Microgreens Have It

Look at an egg carton or a tub of yoghurt these days and there's a decent chance it boasts “omega-3 enriched” somewhere on the label, as if it were some recent discovery. The nutrient itself isn't new. Most people just associate it with fish oil and flaxseed rather than a living, growing microgreen.

AgriZen's Flax microgreens are the one variety in this series built around omega-3, and they're a genuine source of ALA, the plant-based omega-3 fatty acid found throughout the flax plant at every growth stage. What's worth knowing honestly: flaxseed's famous concentrated reputation belongs mostly to the mature seed, and the microgreen's exact number hasn't been directly measured yet, though the underlying chemistry is well understood.

What It Is

Omega-3 fatty acids are polyunsaturated fats named for the position of their first double bond, three carbons from the methyl end of the chain. Alpha-linolenic acid (ALA), an 18-carbon omega-3 with three double bonds, is the plant-based form, found in flax, chia, and walnuts among others. The body can elongate and further desaturate some ALA into the longer-chain omega-3s EPA and DHA more commonly associated with fish oil, using the same enzyme pathway (delta-6 desaturase and elongase) that also processes omega-6 fatty acids, which compete for the same enzymes. This conversion is inefficient in most people and typically converts only a small percentage of dietary ALA, part of why ALA and marine omega-3s aren't considered directly interchangeable.

Role in the Body

Structural component of cell membranes

ALA and its longer-chain derivatives are incorporated into the phospholipids that make up cell membranes throughout the body, particularly in the retina and nervous system, where DHA in particular is concentrated. The degree of unsaturation in these membrane fatty acids directly affects membrane fluidity, which in turn influences how membrane-embedded proteins, including receptors and ion channels, function.

A precursor pool for signalling molecules

When released from membrane phospholipids by the enzyme phospholipase A2, the longer-chain omega-3s EPA and DHA (produced from ALA, when conversion occurs) become substrates for enzymes called cyclooxygenase and lipoxygenase, which convert them into a distinct family of signalling molecules called eicosanoids, including certain prostaglandins and resolvins. These omega-3-derived eicosanoids generally have different, often opposing, signalling effects compared to the eicosanoids made from omega-6 fatty acids using the same enzymes, the biochemical basis for why the dietary ratio between omega-3 and omega-6 intake is discussed alongside the absolute amount of either.

Food Sources (General)

Flaxseed, chia seed, and walnuts are the most concentrated plant sources. Whole flaxseed is genuinely one of the richest ALA sources of any common food, at roughly 50–60% of its total fat as ALA, per NIH Office of Dietary Supplements. Flax microgreens carry a version of that reputation too, genuinely rooted in real plant chemistry, even without a confirmed microgreen-stage number yet.

Which Microgreens Have It

Flax is the only AgriZen variety linked to this nutrient, and the real biochemistry behind it is genuinely reassuring: Wanasundara et al. (1999) tracked flaxseed lipids through 8 days of germination and found that even as total fat content dropped during sprouting (roughly fourfold, about 58% less, on a fresh-weight basis, as the seedling burned stored fat for energy before it could photosynthesise for itself), linolenic acid (ALA) remained the dominant fatty acid throughout, holding its share of a shrinking pool rather than being selectively lost. That's a real, quantitative finding, just not yet a direct measurement of absolute ALA in AgriZen's own harvested crop. AgriZen's flax microgreens are harvested in a broadly similar window, so a comparable pattern is a reasonable expectation, though this isn't a direct measurement of AgriZen's specific crop.

Reference intake: approximately 1.6 g/day ALA (adult men), 1.1 g/day (adult women), per NIH Office of Dietary Supplements (adequate intake figures; no India-specific ALA-only RDA appears in the ICMR-NIN 2020 tables, which set omega-3 recommendations as a share of total energy). No % contribution figure is attempted for flax microgreens given the absence of a direct measurement.

Frequently Asked Questions

Are flax microgreens a good source of omega-3?

Yes, in a real, structural sense, though probably a modest one rather than the concentrated source flaxseed itself is known for. Germination draws down a large share of the seed's stored fat before the microgreen is harvested, which likely reduces total ALA content compared to the seed, even though there's no direct measurement yet to put an exact number on it.

Should I eat flaxseed instead of flax microgreens for omega-3?

If omega-3 intake specifically is the goal, whole or ground flaxseed has a well-documented, concentrated ALA content that flax microgreens are unlikely to match. Flax microgreens are still a reasonable addition to a varied diet for other reasons, just not as a primary omega-3 strategy.

Can the body use ALA the same way it uses fish oil's omega-3s?

Not directly. ALA and marine EPA/DHA are processed through the same eicosanoid-producing enzymes once incorporated into cell membranes, but the body's conversion of ALA into EPA and DHA is inefficient, so ALA isn't a one-to-one substitute for marine omega-3 sources.

A Note on This Information

Everything above describes documented nutritional biochemistry and published research, not medical advice. Nothing on this page is a claim that any AgriZen microgreen treats, prevents, cures, or manages a medical condition. If you're managing a health condition, taking medication, pregnant, or have specific dietary needs, please check with a doctor or registered dietitian before making significant changes to your diet.