คลังวิทยาศาสตร์

Omega-3

EPA · DHA

ระดับหลักฐานระดับหลักฐาน C

ดูบันทึกหลักฐานอิสระที่อธิบายด้วยภาษาที่เข้าใจง่าย ระดับหลักฐานแต่ละระดับตอบคำถามวิจัยที่กำหนดและไม่ใช่คะแนนของผลิตภัณฑ์

ทบทวนล่าสุด: 22 Aug 2026

IN PLAIN LANGUAGE

Why people are interested

Incorporates into cell membranes and influences lipid mediators and triglyceride metabolism.

Outcome map

One ingredient. Different questions.

Each row answers a separate question; evidence strength can differ by outcome.

01
Elevated triglycerides
Defined prescription-strength omega-3 products lower elevated triglycerides in specified populations; ordinary capsules are not interchangeable.
Level A
02
Cardiovascular events
Cardiovascular results are mixed and depend on the exact product, dose, comparator and population studied.
Level C
03
Ordinary retail supplements
Evidence from named prescription products does not establish that an ordinary retail supplement reproduces their clinical effects.
Level D
04
Cognition and physical aging
Large trials do not establish that ordinary supplementation prevents dementia or preserves physical performance in relatively healthy older adults.
Level D
05
Biological aging and lifespan
Human studies have not established slower biological aging, lower all-cause mortality or longer life from supplementation.
Level D

How it may work

Incorporates into cell membranes and influences lipid mediators and triglyceride metabolism.

What people have studied

Omega-3 is not one intervention: dietary fish, ordinary supplements and named prescription products answer different evidence questions. Defined prescription products lower triglycerides, but cardiovascular results differ by formulation and population; prescription evidence does not validate ordinary supplements, and healthy-aging or lifespan benefits are not established.

What to consider

High-dose use in higher-risk cardiovascular populations has an atrial-fibrillation signal. Pooled trials show no significant overall bleeding increase, while high-dose purified EPA shows a small absolute increase; source quality and oxidation remain finished-product questions.

Local pathway

Formula, source, dose and claims require local clearance.

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