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Some suppliers of fish oil claim that it does not matter that EPA is higher than DPA because body will convert part of EPA to DPA. This is indeed true but like conversion of ALA to DHA percentage of conversion is very low. This is due in part to high consumption of Omega 6 in typical Western diet. Enzymes needed for conversion are in 'short supply' in bodies of those people who have a reasonably high level of Omega 6 intake (via vegetable oils). This is because enzymes needed are 'used up' in having to deal with processing of Omega 6 oils. As a result, conversion in most people is quite negligible which further supports ingesting DHA directly. Important Point # 5
As I indicated earlier most fish oils are in triglyceride forms. A triglyceride consists of 3 fatty acids attached to a glycerol backbone. It does not pass easily through cell membrane as it is changed. It also requires two enzyme steps to 'release' its fatty acids.
Sometimes because of structure of triglycerides fatty acids are not released but rather stay attached to glycerol backbone. In contrast, if oil is esterified during concentration and purification processes resulting substance can easily enter body's cell membranes. The esterified molecule has no charge and only requires one enterase enzyme to release fatty acid. (DHA). This enables body to use it as an immediate energy source, or store it for later use. In Summary:
To receive many benefits of DHA you have to consider ensuring that you do as follows: 1. Find a source of fish oil that is high in DHA or alternatively be prepared to take much higher doses of conventional fish oil. 2. Ensure that fish oil you use is molecularly distilled. 3. Try to find oil in Ester form for better bio-availability. In conclusion, try to find a quality fish oil supplement that meets these three criteria and your benefits will far outweigh cost.
Warren Matthews is the Chairman of Xtend Life Natural Products, the manufacturer of a pure molecularly distilled fish oil ester with NO CONTAMINANTS and with exceptionally high levels of DHA!
XTEND-LIFE’s 'Omega 3 / DHA Fish Oil Esters' is available at … http://www.InstantEnergyBoost.com