Clinical study finds appetite-damping changes in people’s metabolism-control systems 12/31/2013
Which omega-3 form is better?
The answer to this question remains unclear.
However, the preliminary evidence leans pretty heavily in favor of PL-form omega-3s like those found in krill oil (and our own cell membranes).
The omega-3s in fish and unrefined fish oils – such as our virgin Wild Alaskan Salmon Oil – come in triglyceride (TG) form, which our bodies convert to PL form before placing them in our cell membranes.
(Our chemically refined High-Potency Omega-3 Therapy Oil – which comes from wild Alaskan pollock – also features TG-form omega-3s.)
The makers of standard fish oils chemically convert their TG-form omega-3s into an “ethyl ester” (EE) form during the molecular distillation process used to isolate fish oil's fatty acids from any contaminants. (This conversion also allows manufacturers to pack more omega-3s into each capsule.)
A majority of clinical research suggests that TG-form omega-3s are absorbed better than EE-form omega-3s, and may provide a slight edge in terms of specific health effects (see “Natural Omega-3s Seen Superior to Standard Supplements”).
Even though fish and people contain only very small amounts of EE-form omega-3s, most medical research has employed standard, chemically refined fish oils that primarily provide EE-form omega-3s.
Despite bogus Internet claims that fish oils containing EE form omega-3s are inferior or unhealthful because they melt Styrofoam, EE-form omega-3s are natural and safe … though not quite as well-absorbed as the TG or PL forms.
Fish oils providing EE-form omega-3s dissolve Styrofoam largely because both substances are oil-soluble, and because the chemical polarities of EE omega-3s and Styrofoam are extremely similar.
In fact, EE-form omega-3s have been used safely in hundreds of animal and clinical studies, and judged safe by regulatory agencies worldwide.
- Participants' blood triglyceride levels – which, when too high, harm heart and metabolic health – dropped by a healthful 21 percent.
- Levels of a key endocannabinoid called anandamide – which is typically too high in obese people – fell by 84 percent by the end of the trial.
- There were significant, beneficial drops in the volunteers' waist/hip ratios and gains in muscle mass around areas of visceral fat. (Visceral or “deep” fat wraps around internal organs and raises the risks of diabetes, heart disease, and dementia.)
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