If you've been reading about the benefits of Omega 3 supplements then you've probably read that most of them use "concentrated fish oil". But what is concentrated fish oil?
If you caught a fish and squeezed it very hard you'd get fish oil out of it. And there would be healthy Omega 3 polyunsaturated fatty acids in that fish oil. Like DHA and EPA, 2 of the most important Omega 3 fats. This would be called standard grade fish oil.
But if you put that in to 1000 mg Omega 3 capsules there really wouldn't be enough healthy Omega 3 fats in there.
So manufacturers have to do something so you get more good fats in your fish oil. They use concentrated fish oil, or what can also be known as super concentrated fish oil or highly concentrated fish oil.
By putting the oil through a concentration process it is ensuring that there are much higher levels of DHA and EPA in the oil. This is good because it means that you can get a significant amount of good fats from taking a few Omega 3 capsules. Otherwise you'd probably need to take handfuls.
When fish oil is concentrated it turns the good fats from a triglyceride form into an ethyl ester form of oil, and this isn't a problem, it's still just as good for you. It is what is known as "bioavailable", meaning if you eat it it can get into your system.
Some manufacturers believe that they need to turn the ethyl ester form back into a triglyceride form because the original was in a triglyceride form. But the process used to do that results in a different molecular configuration from the original, so the new triglyceride isn't nearly as "bioavailable". But it's still good for your health.
And one manufacturer has responded to this by using a different formulation in it's Omega 3 supplements. It uses a concentrated fish oil from Tuna combined with an unconcentrated fish oil in it's original triglyceride form.
And the studies have been interesting, showing up to 2 1/2 times more effectiveness than traditional Omega 3 supplements using concentrated fish oil alone.
So Omega 3 supplements use concentrated fish oil to deliver more Omega 3 fats. But one uses a mixture of both concentrated and unconcentrated fish oil to result in a more potent blend.
So you're getting a combination of both the ethyl ester form of the Omega 3 polyunsaturated fatty acids and the triglyceride form. For some reason combining the 2 leads to much more highly effective Omega 2 supplements.