There's an excellent article on the Huffington Post website, written by Mark Hyman, MD, regarding the reliability of medical studies and the resulting supposedly 'Evidence Based Medicine'. It not only warns against trusting media reportage of health and science, but also tells you why you should do your own homework when it comes to trusting recommendations regarding prescriptions and treatments, and how you can better assess whether a particular treatment is one you want.
This information applies to everyone, whether they have cancer, diabetes, heart disease, a sinus infection, or are considering whether or not they want to take the highly marketed Seasonal Flu/H1N1 combination vaccine. So please go read it, and mark it in your Bookmarks folder for future reference.
While you are at it, read the article mentioned (and linked) therein, written by Marcia Angell, former editor-in-chief of the New England Journal of Medicine. It's a somewhat more technical explanation of the issue, and very enlightening.