Skip to content
DE
Fatty acid

Omega Fatty Acids

Omega fatty acids is an umbrella term for unsaturated fatty acids grouped by the position of their first double bond, such as omega-3, omega-6 and omega-9.

FertilityHair & SkinCardiovascularBone & JointLongevity

What it is studied for

The strongest rated effects first. Bars show the size of the effect, the letter grades the evidence, and each rating lists the studies behind it.

InflammationStrongA3 studies
Pregnancy PrepFertilityModerateA3 studies
Skin InflammationHair & SkinModerateA3 studies
Blood pressureCardiovascularModerateA3 studies
Joint ComfortBone & JointModerateA3 studies
Oxidative stressLongevityModerateA3 studies
All 15 rated effectsGrouped by health goal, with the publications behind each rating

Which fats are we talking about?

The main polyunsaturated families are omega-3 and omega-6. Alpha-linolenic acid, or ALA, is an essential omega-3; linoleic acid is an essential omega-6. Both must come from food. EPA and DHA are other omega-3s, found in fish and marine oils; the body converts only a limited amount of ALA into them. 1

Oleic acid, the main monounsaturated fat, is plentiful in olive, canola and peanut oils. Unlike the essential fatty acids, monounsaturated fats can be made by the body. An oil can contain several kinds of fat, so its overall composition matters. 2

What do they do in the body?

Omega-3s help form cell membranes and, along with omega-6s, provide energy and ingredients for signaling molecules. DHA is especially abundant in the brain and retina. Those normal roles explain research interest in cognition, vision and inflammation; they do not establish that extra capsules improve those outcomes. 1

Key studies

The most recent publications linked to Omega Fatty Acids's ratings.

Effect of omega-3 supplements or diets on fertility in women: A meta-analysis2024Effect of Omega-3 Polyunsaturated Fatty Acid Supplementation on Clinical Outcome of Atopic Dermatitis in Children2024The effect of fish oil rich in cetoleic acid on the omega-3 index and skin quality.2024Diet modification reduces pain and improves function in adults with osteoarthritis: a systematic review.2024Effects of Omega-3 Fatty Acids Supplementation on Serum Lipid Profile and Blood Pressure in Patients with Metabolic Syndrome: A Systematic Review and Meta-Analysis of Randomized Controlled Trials2023
All 29 studiesEvery publication linked to Omega Fatty Acids

Why people take it

Cardiovascular21.2%
Cognition19.7%
Essential Health19%
Immune Support14.7%
Bone & Joint8.4%
Longevity3.5%

SuppCo community snapshot, 2026-09-28. Reasons for use are not evidence that it works.

Questions people ask

Are omega-6 fats something to avoid?

Linoleic acid is essential and must come from food. DGE favors replacing some saturated fat with unsaturated fats, rather than treating the omega-6 family as inherently undesirable. 1 3

Can flaxseed oil replace fish oil milligram for milligram?

No. It supplies ALA, whose conversion to EPA and DHA is limited. The fatty-acid forms differ. 1

Is there a non-fish source of DHA?

Algal oils provide DHA, and some products also contain EPA. The label identifies the actual amounts. 1

Does 1,000 mg of fish oil mean 1,000 mg of EPA and DHA?

No. Fish oil contains other fats, and EPA/DHA content varies by product. 1

Should everyone take an omega blend?

BfR does not see a need for routine EPA/DHA supplements in healthy people, particularly regular fish eaters. Essential dietary fats and specific medical treatment are different questions. 1 4

Sources

  2. Fats: Total fat and fatty acids Australian Government, Eat for Health