Wednesday, June 19, 2013

How Krill Oil Helps Fat Metabolism

by Jayson Hunter, RD, CSCS

Cholesterol levels may be reduced by 33 percent and also improved liver triglyceride levels, which is superior to fish oil according to data from this short-term study.  

More research is always being conducted to confirm and validate the existing research on krill oil.  This is common because the more studies that are conducted that duplicate results, the more valid the data becomes.  

This study is a short-term study and was conducted with rats, but it is in line with another study conducted with humans regarding metabolic symptoms associated with higher fat levels in the heart and liver of obese individuals.

The participants in this study supplemented their diets with 2.5% krill oil or 2.5% fish oil, and the results were a 33% reduction in cholesterol for the krill oil consumers, and a 21% reduction in cholesterol levels for the fish oil consumers.

The liver triglycerides were also reduced by 20% using krill oil, and only 10% for those who were supplemented with fish oil.  The researchers from the Department of Biological and Environmental Sciences and Technologies at the University of Salento believe that this creates new possibilities for the use of krill oil as a tool for preventing dyslipidemia.  Not to mention, this will lead to other future research confirming this type of data.

The results of this study showed that the enzymes in the liver that are involved in the metabolism of fat were significantly inhibited by both fish oil and krill oil; though the effect was much larger for krill oil after two or three weeks.  

The researchers suggest that a higher potency of krill oil decreases hepatic lipogenesis when compared to fish oil during short two- to three-week periods.  They also believe that the inhibition of lipogenesis observed in krill oil-fed animals is most likely because of the decrease in liver concentration of both triglycerides and cholesterol.

Even though this study was conducted with animals, it is very encouraging because it is in line with the findings published regarding a human study that krill oil may help stop metabolic symptoms in obese individuals.  These types of studies allow researchers to continue looking deeper even at the mitochondrial level.  


Mark Dilworth, BA, PES

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