I really would like to have links to the studies mentioned, the most interesting one I could find is:

http://jama.jamanetwork.com/article.aspx?articleid=205797 — 2007, Cited by 1214

  Treatment with beta carotene, vitamin A, and vitamin E may increase mortality. 
  The potential roles of vitamin C and selenium on mortality need further study

Who would have guessed eating too much of something could be bad for your health</sarcasm>