Fish Oil vs. Flaxssed Oil

  1. Advanced Member
    Jag's Avatar
    Stats
    6'1"  272 lbs.
    Join Date
    Sep 2003
    Posts
    691
    Rep Power
    99122
    Level
    24
    Lv. Percent
    71.97%

    Fish Oil vs. Flaxssed Oil


    thought you all might be interested in this study i found on the two.
    interesting to note is the half life between ALA, DHA & EPA.

    Jag


    Fish oil versus flax oil
    BETHESDA, MARYLAND. There is considerable evidence that fish and fish oils are beneficial to heart health, reduce the risk of cancer, and benefit mental health. The "active" components of fish oils are eicosapentaenoic acid (EPA), a polyunsaturated fatty acid with 20 carbon atoms in its backbone, and docosahexaenoic acid (DHA), a polyunsaturated fatty acid with 22 carbon atoms. Both are members of the omega-3 group of essential fatty acids. EPA and DHA are found exclusively in marine animals; fatty fish such as herring, sardines, salmon and fresh tuna are the best sources.
    Alpha-linolenic acid (ALA) is another omega-3 fatty acid found in flaxseed and flaxseed oil. ALA has 18 carbon atoms in its backbone and can be converted to EPA in the body (in the liver) by the addition of two carbon atoms. EPA, in turn, can be converted to DHA. Because the typical American diet is relatively low in fish intake ALA becomes a crucial source of the EPA and DHA required for optimum health.
    Researchers at the National Institutes of Health have just completed a study designed to determine just how much ALA is actually converted to EPA in the body. Their study included eight healthy subjects who were fed a standard diet for three weeks and then given one gram of ALA labeled with an isotope tracer. The diet was beef-based in order to avoid extraneous sources of EPA and DHA. The researchers measured blood plasma concentrations of ALA, EPA and DHA 8, 24, 48, 72, 96 and 168 hours after ingestion of the labeled ALA.
    The results show that only about 0.2 per cent of the ALA (2 mg) was actually converted to EPA. In contrast, about 23 per cent of the EPA was available for conversion to DHA. The researchers also noted that the half-life (the time it takes to reduce initial concentration by 50 per cent) of ALA in blood plasma was quite low at about one hour. In comparison, the half-life of EPA was 67 hours and that of DHA 20 hours.
    The researchers conclude that ALA is not a viable source of EPA and DHA and cannot replace fish and fish oils in the diet. Editor's Note: According to this new data a tablespoon of flax oil would only result in the synthesis of about 30 mg of EPA – far less than the recommended daily intake of 220 mg.
    Pawlosky, Robert J. Physiological compartmental analysis of alpha-linolenic acid metabolism in adult humans. Journal of Lipid Research, Vol. 42, August 2001, pp. 1257-65

  2. Board Supporter
    Kristopher's Avatar
    Stats
    5'11"  264 lbs.
    Join Date
    Feb 2004
    Age
    32
    Posts
    842
    Rep Power
    554
    Level
    23
    Lv. Percent
    28.55%

    id like to hear bobos take on this..
  3. Elite Member
    DR.D's Avatar
    Stats
    6'0"  228 lbs.
    Join Date
    Dec 2003
    Posts
    6,780
    Rep Power
    307856
    Level
    56
    Lv. Percent
    45.71%
    Achievements Activity ProPosting ProPosting Authority

    It's true, just hold your nose and syringe 10ml fish oil down your throat every day! I do flax morning and fish oil evening.
    •   
       

  4. dead sexy wino
    SJA's Avatar
    Join Date
    Jul 2003
    Age
    51
    Posts
    2,054
    Rep Power
    8153
    Level
    34
    Lv. Percent
    70.12%
    Achievements Activity ProPosting Pro

    Quote Originally Posted by DR.D
    It's true, just hold your nose and syringe 10ml fish oil down your throat every day! I do flax morning and fish oil evening.

    Twinlab's Supermax EFA tastes great.

Similar Forum Threads

  1. Fractionated Coconut Oil vs MCT Oil
    By Johnston in forum Supplements
    Replies: 5
    Last Post: 06-11-2014, 05:45 PM
  2. Fish oil vs. Krill oil
    By purebred in forum Nutrition / Health
    Replies: 11
    Last Post: 02-17-2011, 03:36 PM
  3. krill oil vs fish oil
    By qwerty33 in forum Supplements
    Replies: 28
    Last Post: 12-12-2009, 06:53 PM
  4. Fish Oil vs. Flaxseed Oil?
    By GreenSquats in forum Supplements
    Replies: 113
    Last Post: 10-20-2008, 12:01 AM
  5. Fish oil vs. Libido
    By jbprof in forum Supplements
    Replies: 5
    Last Post: 06-16-2005, 02:08 PM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
Log in