It is studies like this, quite simply, that show the negative effects (as in, if it's not part of the solution, it's part of the problem) of isolated, "pure" supplements.
Except in special cases (like iodine, where a measured dose for a certain period is desired), people should get their nutrients from food first, and then from the equivalent of "whole food extracts", as in supplements from Innate Response, RightFoods, and NewChapter.
For those of you who might be using Super Nutrition vitamins, you should know that they use isolated nutrients jammed into a "whole food" base. They are not "whole food based" supplements. I hope you can understand the difference.
Many people already hate this study. I love it. It means that what I'm doing is correct (or at the least, much more correct than the 99-percenters). And people think I take my supplement choices way too seriously....ha!