Once again InformationIsBeautiful hits one out of the park.
Today's fun is an interactive page ranking the scientific evidence proving a certain health supplement is effective vs it's popularity.
Some surprises: Fish oil, folic acid, St Johns Wort, and green tea are well established with proveable scientific evidence to their benefits.
At the other end of the spectrum, Green tea, anti-oxidants, vitamin A and vitamin E have very little evidence as to their effectiveness.
Slight clarification: green tea has very little evidence as to its effectiveness with regards to cancers and weight loss, but has good effectiveness wrt cholesterol. (Almost) nothing can be good at -everything.- :)
@barbara - Yes, it's interesting that green tea is on both sides of the equation.