A Shiny Surface and a Tainted Past

Abstract

The day Erin Brockovich was driving in Reno and got hit by another driver, brought her in close contact not only with the bumper of the other car, but eventually also with the US legal system, and this would change her life completely. The day Steven Soderbergh asked Julia Roberts to play the part of Erin Brockovich in the film with the same name didn’t really change her life, one presumes, but it would show the world’s moviegoers and critics that the star and Academy Award winning actress of 1990 was really back on the right track. What is the link between these events? The answer is the element chromium. It was chromium that made law-firm clerk Brockovich start a David-against-Goliath struggle with the California energy conglomerate Pacific Gas and Electric Company, that made director Soderbergh make the blockbuster movie that gave Roberts an Oscar for best female actress in 2000 and revitalized her career. I will try not to spoil the picture for those who have not seen it, because it is well worth watching, but the fact that the good guys win in the end is probably not a surprise anyway. However, the role of chromium in this play is not at all evident. And are the good guys really the good guys? There is usually a proper amount of, and a proper place for, everything, and this includes the elements of the periodic table. The main component in steel, a material which has a role to play in this story, is iron, and while we sometimes have too low a level of this element in our bodies, too much of it will kill us. The same goes for chromium: we can’t live without it. Or so it was thought until very recently. It was supposed to help us to break down and metabolize sugars, and thus ‘chromium deficiency’ could possibly be related to diabetes. Now, while low levels seems to do no harm, there are still possibilities of a therapeutic window—that is, concentrations where it may do some good—but it does not any longer seem to be considered an essential element, although official consensus on this has not yet been proclaimed.