It is one of the essential fatty acids, which have numerous duties, and cause the production of prostaglandins of the type PGE2. These are hormone-like compounds, which stimulate and control many bodily functions. PGE2 accelerates blood clotting and increases water retention, but excesses of it, which arise primarily from consumption of animal products, can cause pain and inflammation. Arachidonic can be derived from a single cell organism, and thus may be in the form of a triglyceride. A also releases leukotrienes ; these are substances which can help to heal wounds and injuries but, in excess, will stimulate such conditions as breast lumps and arthritis, especially rheumatoid arthritis, asthma, psoriasis and lupus erythematosus. Aspirin and steroid drugs inhibit the synthesis of PGE2 and can therefore reduce blood clotting, pain and fever. Indeed, aspirin is now widely used to protect vulnerable people from heart attacks.

However, as it also inhibits PGE1, which counteracts the action of PGE2, a better choice is to increase the level ofPGE1, which has a natural anti-inflammatory action. This can be done by taking evening primrose oil and excluding animal foods (except for some fish) . It .is a polyunsaturated fatty acid that is present in the phospholipids of membranes of the body's cells, and is abundant in the brain. It is useful for infant brain development and small amount need for fetal development. It is originate in fish, egg and selfish. It has two fat one is bad such as as saturated fatty acids and cholesterol and other second is good fat such as , AA is a t pe Omega 6 fatty acid.It is found in egg yolk, meat and animals based items. Other is Gla and La is found in black current seed oil , borage oil and fungal oils.

The deficiencies of this acid causes may disesase such as to condensed increase, incapacity to fight infections and sterility.The common equilibrium among Omega 6 and Omega 3 should be 1:1 or 4:1 according to University of Maryland Medicine.The arachidonic acid is an omega-6 fatty acid 20:4(ω-6).and found in peanut oil. It is to treating, infection, trauma, burns, and spinal cord injury and it is very beneficial to promote the buildup of muscle tissue.

It is also useful to stimulating skin and hair growth, maintaining bone health, regulating metabolism, and maintaining reproductive capability. The inequity this acid cause diseases such as heart disease, cancer, asthma, arthritis, and depression. AA is useful in allergy , menopausal problems, Acne and Psoriasis,Eczema,Eye Disease.

Epo is very beneficial in breast cancer and weight loss. GLA is useful in joint pain, swelling, and stiffness, black currant seed oil etc is useful for this conditions. AA is applicable to bloodpressure . It is very useful for those patient who suffer of the intestinal and stomach ulcer and gastric problems.