HB -
Navigating Your Health and Wellness
KRILL OIL-There is substantial research on the benefits of omega-3s and krill oil, in particular, has been studied with convincing results to improve hippocampus 3-5 grams for 6 weeks you can repair your hippocampus (where the learning occurs). Omega 3s DHA and EPA should be a staple in your daily supplementation, either through krill oil or DHA/EPA supplement. This is pretty uncontroversial. And krill oil, since it is lower down the food chain, there is a lower risk of heavy metal contamination as compared to omega 3s sourced from fish higher up the food chain.
There are few other notable benefits of krill oil such as enhance glucose metabolism of the liver, increased lipid metabolism, helps regulate the mitochondrial respiratory chain and decreases cholesterol synthesis. Mercola has a good article explaining the details and research:
Studies
Krill oil impact of cognitive behavior in rats: http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3618203/