Krill Oil vs Fish Oil

Omega 3 oils like krill oil and fish oil are some of the widely consumed diet supplements that contain essential oils such as EPA and DHA with wide range of health gains. Here’s an in-depth exploration of the differences and similarities between krill oil and fish oil, based on existing research:

1. Omega-3 Fatty Acids:
– Krill Oil: These two long-chain essential fatty acids are present as the phospholipid forms in krill oils. This characteristic structure may increase absorption compared to the existing triglycerides version seen in fish oil.
– Fish Oil: Omega-3s from fish oil are mainly supplied in the form of triglycerides that are well absorbed too.

2. Bioavailability:
– Krill Oil: According to others, this phospholipid structure in krill oil improves its bioavailability. Therefore, a lower dose is required for Krill oil as compared to the case of higher dose in Fish Oil by comparator.
– Fish Oil: Much research has also shown that fish oil work albeit probably more dosages are required.

3. Antioxidant Content:
– Krill Oil: Astaxanthin is a powerful antioxidant, and it can be found in krill oil subsection: Omega-3s are highly sensitive, and astaxanthin prevents them from oxidizing during storage to enable more extended shelf life as well as provide further potential health advantages.
– Fish Oil: A larger proportion of fish oil supplements does not contain astaxanthin which may enhance its susceptibility to oxidation and rancidity.

4. Sustainability:
– Krill Oil: Krill, though essential for the marine food chain, has also raised concerns on its sustainability with regard to being harvested as it may not be able to satisfy the demands of fish that feed on them. Harvesting must be sustainable so as not to affect the environment negatively.
– Fish Oil: For example, some fish of fish oil origin like anchovies and sardines may be sourced sustainably. Responsible sourcing is certified by things like MSC (Marine Stewardship Council).

5. Price:
– Krill Oil: Unlike fish oil, krill oil supplements are generally more expensive per serving.
– Fish Oil: Often fish oil is cheaper and more readily available.

6. Potential Side Effects:
– Krill Oil: While no such side effects are usually associated with krill oil as compared with fish oil, some users may notice fishy aftertaste or even suffer from digestive discomfort.
– Fish Oil: Some people suffer fishy burps and stomach upset when they take up fish oil. This happens sometimes, especially if one takes enteric capsules or fish oil and eats with it.

7. Health Benefits:
– Krill oil and fish oil have shown anti-inflammatory properties that improve overall heart health such as lowering of triglycerides, blood pressure and risks associated with high cholesterol levels (cardiovascular disease).

Finally, krill oil and fish oil are sources of omega-3 fatty acids that have distinct properties and benefits. Such considerations as personal preferences, special diets, finances, nutritional issues should help make this decision. You should consult your physician before taking a new supplement for your health reasons.