Omega 3 fatty acids are PUFAs (poly unsaturated fatty acids) and they are essential fatty acids which means they cannot be synthesized by the body and have to be included in the diet. The best sources of omega 3 fatty acids are fish like sardines, mackerel and salmon. For a vegetarian the best sources would seeds like flaxseed, soybean, pumpkins and walnuts. These Omega 3 fatty acids have been recommended for a range of conditions and diseases but most commonly it is known for its cholesterol lowering properties. There are also several clinical studies suggesting its efficiency in conditions like dry skin, arthritis and depression. Capsules or supplements of Omega 3 fatty acids like cod liver oil and other fish oils are also effective and may take around 3 weeks for the benefits to be noticed. Also remember that fish is believed to be contaminated with mercury traces which may adversely affect brain development so pregnant ladies and small children must not consume fish. They can get Omega 3 in their diet from mercury free sources or fish oil which is mercury free. Also people who are on blood thinning medications, with bleeding disorders or on aspirin must first consult with a specialist before starting on supplements of Omega 3 as it may increase the tendency of bleeding. Also Diabetics need to consult with a specialist as it may increase the fasting blood sugar levels and may require an increased dose of antidiabetic drugs while on Omega 3 supplements