What are benefits of krill oil?

Krill oil: Krill oil has omega 3 fatty acids and also antioxidants. For this reason, it is thought to have possible effects against atherosclerosis and cardiovascular events such as heart attacks and strokes. No large studies have been done to show benefit however and these compounds are generally unregulated.

Mostly hype: Krill oil and fish oil are the new snake oil, both are high in omega 3 fatty acids which are extremely fragile. Omega 3 fish oils reduce triglycerides by impairing the liver's ablility to make them. However the oxidative stress caused by fish oil actually raises LDL cholesterol. Some day we may use the phrase "this is just more fish /krill oil" or "here comes the fish/krill oil salesman".

NotFish; 2Omega3Fats: Evidence is mostly 1 (epa), possibly a 2nd (dha), omega 3 fatty acid from phytoplankton; harvested from fish (easier/↓$), along with whatever else (not good). About 1, 000 mg/day of quality epa tends to lower LDL particle concentrations ;, in trials of many years, have ↓ed death rates ~12-15%. Keep in mind these are essential nutrients, not drugs, thus short term trials do not show much benefit.