The absence of DHA in many pure EPA trials, and therefore lack of competition between EPA and DHA during digestion and consequently for uptake, is considered to be partly responsible for the positive outcomes. Simply put, pure EPA delivers more EPA into cells where it is needed than combined EPA & DHA blends. Consequently, oils containing DHA may not be suitable for a variety of conditions when treatment relies on increasing levels of EPA and its end products.
Jump up ^ Crowe, Francesca L.; Appleby, Paul N.; Travis, Ruth C.; Barnett, Matt; Brasky, Theodore M.; Bueno-de-Mesquita, H. Bas; Chajes, Veronique; Chavarro, Jorge E.; Chirlaque, Maria-Dolores (2014-09-01). "Circulating fatty acids and prostate cancer risk: individual participant meta-analysis of prospective studies". Journal of the National Cancer Institute. 106 (9): dju240. doi:10.1093/jnci/dju240. ISSN 1460-2105. PMC 4188122. PMID 25210201.
Pumps the Heart: Where to begin? Omega-3s reduce triglycerides, stabilize your heartbeat, make platelets "less sticky" and can even lower blood pressure. The EPA you get with your daily DHA dose helps prevent artery-blocking clots. In the Iowa Nurses Study (and 3 others), 1 ounce of nuts a day decreased the incidence of heart disease between 20 and 60 percent.
Animal studies show potent reduction of liver fat stores, glucose levels, and cholesterol levels in mice supplemented with krill oil while being fed a high fat diet.64,65 While many of these effects are seen with fish oil as well, studies show that krill oil, with its unique phospholipid structure, had the added benefit of increasing fat-burning in mitochondria while reducing new glucose production in the liver.66,67 As with so many other complex disease processes, utilizing multiple pathways to reduce disease is a highly effective strategy.67
Corresponding Author: Yutaka J. Matsuoka, MD, PhD, Division of Health Care Research, Center for Public Health Sciences, National Cancer Center Japan, 5-1-1 Tsukiji, Chuo-ku, Tokyo 104-0045, Japan (email@example.com); Kuan-Pin Su, MD, PhD, China Medical University Hospital, No. 2, Yude Road, North District, Taichung City, Taiwan 404 (firstname.lastname@example.org).
Human studies also confirm cognition and memory improvement with omega-3 supplementation. For example, a study showed that both fish oil and krill oil enhanced cognitive function in a group of older men by increasing oxygen delivery to their brains. Interestingly, for those taking krill oil this effect was more prominent than those taking fish oil, though both groups were significantly better than placebo.30 As we pointed out earlier, because the omega-3 DHA is bound to phospholipids in krill it may be more effectively incorporated into the critical cell membrane in brain cells.
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