This is an interesting review by the NHS about an article published by the Daily Mirror about back pain. It highlights what actual evidence the article was based on, and points out where the science does not necessarily back up the opinion.
There is an entire collection of similar articles from several different media sources - the moral of the story is don't always believe what you read and where medicine is involved, it is always worth understanding the science behind the opinions!
"Exercise is the best medicine to banish back pain and stop people taking sick days," reports the Daily Mirror. While this may be true, the research in question did not look at treatments for existing back pain. In fact, the researchers reviewed previously gathered evidence about what helps prevent, not treat, lower back pain. Also, the evidence that exercise reduced sick leave was judged to be poor quality.