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The question that comes next is which are the best omega 3 sources that can give adequate amounts of these beneficial fats?
While you can get omega 3 from a wide variety of sources, they all have their pros and cons. So here it is: Broadly speaking, we can divide omega 3 sources into two categories Vegetarian and Non Vegetarian Vegetarian Sources The most popular and most commonly taken vegetarian omega 3 source is Flaxseed oil.
This oil contains high levels of ALA (Alpha Linolenic Acid) omega 3 fatty acid. The problem with ALA is its not very beneficial for your body by itself. It has to be first converted into DHA and EPA fats which are actually responsible for the major health benefits to the heart, brain, eyes, joints and even your skin. This conversion is not a very efficient process and only a fraction of ALA is actually converted into DHA and EPA.
Other foods in this category that can give you omega 3 are cauliflower, cabbage, kale, tofu, papaya, strawberries, cloves and mustard.
Non Vegetarian Sources Sea food like fish, scallops, shrimp, and krill are a better option as they can directly provide DHA and EPA to your system. Now scallops and shrimps are not the best omega 3 sources as they do not have adequate levels of these fats. Krill oil is a better option, and since krill is not directly available for consumption, you would have to opt for a supplement containing oil derived from these crustaceans.
However, note that there are some concerns regarding the environmental impact of consumption of krill oil. This may cause an ecological imbalance as the krill plays an important part in the oceanic food chain. Consuming fish is a better choice as fish harvesting is done in a controlled manner which ensures there is no ecological impact. The only problem here is due to the heavily polluted ocean waters they live in, fish also ingest many contaminants like Mercury and Lead.
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From: (omega 3 source) http://omega3information.com/227/omega-3-sources/