Omega-3 is one of the essential unsaturated fatty acids that can't manufactured inside the human body, so it's obtained through the nutritional element such as; flax seeds oil, almond oil, soybean oil, whale liver oil, fish oil as well as fatty fish (tuna, salmon, herring, mackerel… etc.).

Omega-3 has many health and therapeutic benefits, they include:

• It prevents against cardiovascular disease such as; strokes, hypertension, atherosclerosis… etc.
• It reduces cholesterol and triglyceride blood levels.
• It prevents fat deposition or platelet aggregation on the endothelial lining of blood vessels.
• Omega-3 is an effective anti-inflammatory substance, so it's used to eliminate inflammatory reactions that could occur inside the body.
• Omega-3 promotes the functional capacity of the brain, also it has a secondary role in treatment of depression and mood disorders.

Despite all these benefits of omega-3; its overconsumption could induce negative health effects. Recent medical studies showed that excessive intake of omega-3 could lead to decrease in the body's production of lymphocytes, which decreases the functional capacity of the immune system.