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Fish Oil vs. Flaxseed Oil

Flaxseed oil and fish oil are both popular dietary supplements that provide essential fatty acids, but they differ in their composition and the types of fatty acids they contain. 

Direct Source of EPA and DHA:

  • Fish Oil: Contains eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) directly. These omega-3 fatty acids are crucial for various bodily functions, including heart health, cognitive function, and inflammation control.
  • Flaxseed Oil: Even though flaxseed oil has a high concentration of the omega-3 fatty acid ALA, ALA does not properly convert to EPA and DHA, therefore it is not an acceptable replacement for the omega-3s found in fish oil. The issue is that ALA needs to be changed into EPA and DHA by a small number of enzymes. Because of this, only a little amount of it—between 10% and 15% at most—converts into EPA and DHA. The majority of it (85–90%) is either processed by the body in different ways or burned up as energy.

Efficient Absorption:

  • Fish Oil: The EPA and DHA in fish oil are in a form that the body can readily absorb and utilize, ensuring a more effective delivery of essential fatty acids to the cells.
  • Flaxseed Oil: The conversion of ALA to EPA and DHA is limited and varies among individuals, leading to a less reliable supply of these critical nutrients.


  • Fish Oil: Offers higher bioavailability of omega-3 fatty acids, allowing for a more potent and immediate impact on health.
  • Flaxseed Oil: Lower bioavailability due to the need for conversion, potentially resulting in a diminished overall impact.

Additional Nutrients:

  • Fish Oil: Contains not only omega-3 fatty acids but also often includes vitamin D and other fat-soluble vitamins, providing a comprehensive nutritional profile.
  • Flaxseed Oil: While it contains ALA and some antioxidants, it lacks the additional nutrients found in fish oil.

Fish Oil vs. Flaxseed Oil For Cholesterol 

  • Fish Oil: Studies suggest that regular consumption of fish oil and omega 3 supplements may have a potential positive impact on cholesterol levels. The omega-3 fatty acids in fish oil can contribute to a healthier lipid profile by increasing high-density lipoprotein (HDL or "good" cholesterol) and reducing triglycerides.
  • Flaxseed Oil: While flaxseed oil also has potential cardiovascular benefits, its impact on cholesterol levels may be more modest compared to fish oil. The conversion of ALA to EPA and DHA in flaxseed oil may not be as effective in influencing cholesterol markers as the direct supply of these omega-3s from fish oil.

Try Lester's Oil 

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A human study carried out at a university in New Zealand provides credence to Lester's Oil, a natural substance. Standard Omega-3 formulae feature low-quality, low-dose fish oil; however, Lester's Oil® incorporates five other essential elements at therapeutic concentrations, along with five times as much Omega-3 in a soft gel of the same size. These ingredients include vitamin D, co-enzyme Q10, lutein, zeaxanthin, and astaxanthin.