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The ratio of Omega-3 to Omega-6 in the diet is said to be important for the immune system. Put simply, one can say that Omega-6 increase the inflammation reaction in the body, while Omega-3 helps to reduce this.

Today, a typical Western diet contains low amounts of Omega-3 and a larger amount of Omega-6, and it is recommended that the level of Omega-3 is increased. This may be crucial when it comes to prevention and treatment of several ailments where inflammatory reactions are involved, such as heart disease, joint pains/rheumatism and inflammatory bowl disease.

The Omega-3 and Omega-6 families are converted in the body by the same enzyme system, and the products of this conversion may in many situations have opposite effects in the body. It is therefore important that these essential fatty acids have a certain ratio in relation to each other.

In recent years, the Western diet has changed and we are now using more plant-derived fat, and the amount of Omega-6 has increased as a consequence of this. Several studies indicate that a typical Western diet contains more Omega-3 than what is favourable for our health. There is no consensus on what the optimal ratio might be, but a ratio of Omega-3 to Omega-6 of between 1:3 and 1:5 is probably beneficial.

(Source: Omega-3 – general information).