Definition: "An ergogenic aid is any substance or phenomenon that enhances performance "
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13.01.2016 |
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Does lutein speed up fat loss?
Lutein, a compound found in leafy green vegetables, protects the eyes and increases energy expenditure in muscle cells – and it may also stimulate fat breakdown. We, the ignorant compilers of this free webzine, have a sneaking suspicion that this is the case after reading a couple of Dutch studies. Studies that at first glance would not seem to have anything to do with fat loss.
Lutein
Scientists in Maastricht, in the Netherlands, are doing research on this aspect of lutein. They suspect that one of the reasons that lutein works is because it inhibits the concentration of the enzyme complement factor D – aka adipsin.
The same complement factor D also plays a role in the growth of fat tissue. It is produced and secreted by fat cells, where it is involved in the uptake of glucose and the conversion of glucose into fat. Complement factor D also inhibits lipolysis: the process by which fat cells release their contents into the bloodstream.
Lab animals that are unable to synthesise complement factor D become unhealthier, but also gain weight more slowly when put on a fattening diet. [J Am Coll Cardiol. 2014;63(12_S).] So the synthesis of complement factor D would seem to be undesirable. But reducing the synthesis of it during cardio training or fasting periods, might aid fat loss. At least, you'd think so.
Study
Results
In 2013 the same researchers published the results of a human study in PLoS One, in which they had got subjects with age-related macular degeneration to take 10 mg lutein every day for a year. [PLoS One. 2013; 8(8): e73387.] During that period the concentration of complement factor D in the blood of the subjects more than halved, as the figure below shows.
The solid line: the lutein users.
Conclusion
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