Krill oil vs fish oil

In the discussion between krill oil and fish oil, several key points highlight their differences and benefits:

1. Omega-3 Structure and Bioavailability:

   • Krill oil contains omega-3 fatty acids, primarily DHA and EPA, in phospholipid form, which can be more bioavailable compared to the triglyceride form found in most fish oil supplements. This means that DHA in phospholipid form may more effectively get into plasma cells compared to its triglyceride counterpart 1.
   • Fish oil supplements typically contain omega-3s in a triglyceride format. Higher-quality fish oils maintain this structure, while lower-quality options might use ethyl ester forms, which are less bioavailable and require food for effective absorption 2.

2. Dosage and Effectiveness:

   • Krill oil supplements are usually lower in omega-3 content, making it challenging to get adequate amounts (around 2 grams) from krill oil alone 1. This lower dosing can limit their effectiveness compared to consuming higher doses of fish oil.

3. Quality Concerns:

   • Krill oil has been reported to often be rancid, which poses a concern for its freshness and quality 1. Users may notice unpleasant sensations or adverse effects, suggesting potential quality issues.
   • High-quality fish oil, particularly in triglyceride form, is generally favored for better absorption and effectiveness, especially for those looking to manage specific health issues such as high triglycerides 2.

4. Recommendation:

   • While both krill oil and fish oil offer benefits, individuals should consider their specific health needs, potential allergies, and the quality of the supplements chosen. Sardines and other fatty fish are also recommended for their omega-3 content 2.

For further insights, you may refer to the full discussion in the episode "Micronutrients for Health & Longevity" on the Huberman Lab with guest Rhonda Patrick and host Andrew Huberman.