I just read a very interesting paper urban legends in academia, with the story of spinach as the example. People believe that spinach is good for you because of it's high iron content. Well, the reason people believe that is because of an incorrect decimal in a research paper in the 1930s that made it seem that spinach has 10x the amount of iron that red meat. Interesting, right? But upon further investigation, it turns out this claim is false. The mistake was actually made in a paper published in 1890, and 1930 was the year the mistake was finally disclosed. OK, so the story got the date wrong by 40 years, but the gist is still the same, right? Not quite. There is no evidence that this mistake was ever committed! So why do people believe spinach has a high iron content? Simply because it does have a high iron content. At this point you may be thinking to yourself, "WTF, this is stupid! Fuck you for making me read this" Except that there is a twist, spinach is high in iron, but most of it is not available for absorption. In fact, it contains other substances that prevent the body from absorbing iron. So iron-anemic individuals should *avoid* eating spinach! http://sss.sagepub.com/content/44/4/638.long