Linolenic acid is mainly obtained from food. Foods rich in linolenic acid include the following:

Dried fruits: walnuts, nuts, green leafy vegetables, and purslane.

Animals: seaweed, fish (not for breeding), especially deep-sea fish and shellfish.

Among vegetable oils, flax oil (linseed oil) has a higher content, with a content of more than 56%. You can supplement linolenic acid by adding a little to cooking. Perilla seed oil has a high content, but is rarely available on the market. Other common oils are present in smaller amounts.

Linolenic acid, abbreviated as LNA, belongs to the ω-3 series of polyene fatty acids (abbreviated as PUFA). It is a full cis-9, 12, and 15 octadecatrienoic acid. It exists in the form of glyceride in dark green In plants, it is the main component of human tissue cells. It can be synthesized and metabolized in the body and converted into DHA and EPA, the essential life-active factors of the body. However, it cannot be synthesized in the human body and must be ingested from outside the body. Once the human body is deficient, it will cause lipid metabolism disorders in the body, leading to symptoms such as reduced immunity, forgetfulness, fatigue, vision loss, atherosclerosis and other symptoms. Especially if infants, young children and teenagers lack linolenic acid, their normal intellectual development will be seriously affected. This has been confirmed by domestic and foreign scientists and recognized by the world's nutritional community. In addition, lacking alpha-linolenic acid, vitamins, minerals, proteins and other nutrients cannot be effectively absorbed and utilized, resulting in nutrient loss.