If I am looking to purchase something then the internet is where I go first. I will read customer reviews, Which reports and the like before making a decision. I will also look for the best price. This saves me traipsing around all the shops that sell this particular product. This also applies to clothes and some stores do customer reviews which helps.
An example with the clothes might be that reviews suggest you need a larger/smaller size than you usually buy.
If your question is about diabetes related articles then you will find that if it suits a person's beliefs then they will take it on board.
Newspapers have a tendency to write headlines about studies that will grab the reader's attention but if they put a reference to the actual study it can be a different article altogether as newspapers rely on spin.
Another thing is articles about mice being used to get results. People will decry mouse studies unless, once again, it agrees with their personal beliefs.
There are some interesting studies that this NHS website dissects to come up with a better rationale.
No it was not just about diabetes
http://www.nhs.uk/news/Pages/NewsIndex.aspx
They explain how half of health news is spun.
http://www.nhs.uk/news/Pages/about-behind-the-headlines.aspx
How to avoid miracle cures and medicine scams
http://www.nhs.uk/Livewell/Pharmacy/Pages/Miraclecures.aspx
Miracle foods and the media.
http://www.nhs.uk/news/2011/02February/Pages/miracle-foods-special-report.aspx
I could read a report that says that my particular way of managing my diabetes does not work and will cause health worries. I know that this is not true for me because of my personal beliefs and the anecdotal evidence I can supply. Whether the article would influence someone else I don't know, others may read it and decide it is not for them. Our belief system will always influence how we interpret articles IMHO.