Kadiera's Playground Cute but Evil - it averages out

"The truth is, shockingly few prevention efforts actually save the health care system money overall, despite claims by the president and some in Congress."

http://news.yahoo.com/s/ap/20090624/ap_on_he_me/med_health_prevention_re...

It seems to me that if we want to save money on health care, we should start with evidence based medicine - stick with therapies that actually work for most people, until/unless it doesn't work for a specific patient. If therapies don't work, the cost is sort of irrelevant, isn't it?