Compound or practice · Nutrition
Flaxseed / ALA Omega-3
The plant omega-3 (ALA) — heart-healthy as a food, but a poor way to raise EPA/DHA because conversion is minimal.
- Overall grade
- Grade C
- Last revised
- 2
- graded outcomes
- 0
- references listed
A structured monograph in Prometheus's bundled library. Its grades are the monograph's own reading of the evidence, not a peer-reviewed review.
1 at grade B · 1 at grade D — 2 graded rows
What is known
Each outcome with its grade (how strong the evidence is, A to D), the size of the effect where the entry records one, and how often studies agree.
- Blood pressure / LDL (flaxseed)Evidence grade B
Whole seed
Smallmixed
- Omega-3 index (EPA/DHA)Evidence grade D
Poor conversion
Trivialhigh
What is uncertain
Read off the same rows as above. Nothing here is added that the entry does not itself record.
- Thin evidence: Omega-3 index (EPA/DHA) (grade D).
- Studies disagree: Blood pressure / LDL (flaxseed) (mixed agreement).
Interactions
Documented pairings with supplements and medicines. A medicine on this list is a conversation for whoever prescribes it.
Omega-3Works together
ALA complements, but doesn't replace, EPA/DHA.
The evidence in words
What it is
Flaxseed (and chia, walnuts) supply alpha-linolenic acid (ALA), the plant omega-3, plus fiber and lignans.
How it works
ALA is the precursor to EPA/DHA, but humans convert only a few percent — so it doesn't efficiently raise the omega-3 index.
What the evidence shows
Whole flaxseed modestly lowers blood pressure and LDL (fiber + lignans + ALA) and higher ALA intake associates with lower cardiovascular risk. But for actually raising EPA/DHA, algal or fish omega-3 is required — ALA won't do it.
Safety & interactions
Very safe as a food; grind flax for absorption; mild antiplatelet at high doses. Omega-3 — ALA complements, but doesn't replace, EPA/DHA.
Bottom line
Great heart-healthy food, poor EPA/DHA source. Eat ground flax for its own benefits; use algae or fish oil to raise the omega-3 index.
Goes with
- Omega-3 (EPA/DHA)ALA complements, but doesn't replace, EPA/DHA.Evidence grade A
Related reading
Entries that share this one's tags or conditions.
- Flaxseed / ALA Omega-3 for Blood pressure / LDL (flaxseed)Evidence grade B — Whole seedEvidence grade B
- Flaxseed / ALA Omega-3 for Omega-3 index (EPA/DHA)Evidence grade D — Poor conversionEvidence grade D
- Flaxseed / ALA Omega-3: side effects, safety & interactionsVery safe as a food; grind flax for absorption; mild antiplatelet at high doses.Evidence grade C
- Krill OilPhospholipid-bound EPA/DHA with better absorption per gram — but far less omega-3 per capsule than fish oil, at a premium price.Evidence grade C
Sources
This entry lists no references of its own.
Last revised . A grade is this entry's reading of the evidence, not medical advice.