I have mentioned before that the MS therapy centre I attend for hyperbaric oxygen is promoting a commercial 7 step treatment approach called "Overcoming MS". There is also an NHS approach called "Living Well with MS" which I have no quarrel with - the usual, eat well, exercise as much as you can, reduce stress - but there is a vast difference between living as well as possible and overcoming a disease like MS. Today, I decided to read the leaflet giving the scientific references for the program. It had the usual problem of confusing correlation with causation but what was eye opening for me was the statement about evidence based medicine. I had to leave the leaflet behind so I don't remember who says it but it went something like this. "Many scientists believe that we have to wait for properly run large scale trials before they can say anything definitive about treatments [such as the plant based diet they recommend or the large doses of vit D] but evidence based medicine means taking evidence from wherever it exists so individual patient experience is just as important." So that explains a lot. When the likes of MS or the LP promoters use anecdote they feel that is valid evidence.