Omega-6 fatty acids are essential polyunsaturated fatty acids that the body cannot produce on its own. Essential for cell membrane function, the immune response, and hormonal regulation, they are abundant in the modern diet—often in excess compared to omega-3s. The challenge is not to consume more of them, but to rebalance their ratio with omega-3s and prioritize high-quality forms such as AGL.
What are omega-6 fatty acids and their forms?
Omega-6s comprise several fatty acids with distinct properties.
- Linoleic acid (LA): a precursor to other omega-6 fatty acids, found in vegetable oils (sunflower, corn, soybean)—very abundant in the Western diet
- Gamma-linolenic acid (GLA): a form derived from LA, found inevening primrose and borage oils—has soothing properties for the skin and supports joint comfort
- Arachidonic acid (AA): an animal-derived form, a component of cell membranes and a precursor to mediators involved in the immune response
What are the benefits of omega-6 for the body?
When consumed in appropriate amounts and with a good omega-6-to-omega-3 ratio, omega-6 fatty acids contribute to several essential functions.
- Cell membranes: They contribute to the fluidity and permeability of membranes, which are necessary for cellular exchange
- Immunity: They play a role in the physiological inflammatory response to infections and injuries
- Skin: AGL contributes to skin comfort—beneficial for dry skin and those prone toeczema
- Hormonal balance: They are involved in the synthesis of prostaglandins, which regulate the menstrual cycle
- Brain function: AA is a structural component of the brain and is involved in nerve transmission
AGL as a supplement: evening primrose and borage?
Omega-6 supplementation is rarely necessary for AL, which is abundant in the diet. However,AGL may be the subject of targeted supplementation.
- Evening primrose oil: a recognized source of GLA that supports skin health, joint flexibility, and female hormonal balance
- Borage oil: higher GLA content than evening primrose oil—particularly valued for skin hydration and joint comfort
- These formulas are often combined with vitamin E to stabilize the fatty acids against oxidation
- Precautions: Not recommended for individuals with epilepsy (evening primrose oil) or during pregnancy without medical advice
Omega-6 to omega-3 ratio: how to balance it?
The ideal omega-6 to omega-3 ratio is estimated to be between 3:1 and 5:1. The Western diet often reaches 15:1 to 20:1, which promotes a chronic pro-oxidative and pro-inflammatory state.
- Reduce excessive intake of omega-6-rich oils—such as sunflower, corn, and soybean oils—in favor of canola or olive oil
- Increase your intake of omega-3s: fatty fish (sardines, mackerel, salmon), flaxseeds, canola oil
- Reduce consumption of fatty meats and processed meats (high in pro-inflammatory arachidonic acid)
- Omega-3 (EPA/DHA) supplementation is often more effective than reducing omega-6 intake for improving the ratio
What are the effects of an excess or deficiency of omega-6?
Both extremes disrupt physiological balance.
- Excess omega-6 (without sufficient omega-3): promotes a pro-oxidative state, may contribute to chronic fatigue and immune imbalances
- Omega-6 deficiency (rare): dry, flaky skin; fragile capillaries; low energy—especially in cases of fat malabsorption or a very restrictive diet
- In practice, omega-6 deficiencies are rare—omega-3 deficiency is the predominant problem in Western diets
