There has been a lot of hubbub over the last few years about most health supplements being useless, or at the very least irrelevant if one eats and lives healthy. If you want a quick and easy way to sort through all the different claims and misconceptions about purportedly health foods, herbs, and supplements, check out the “Snake Oil Superfoods” infographic over at Information is Beautiful, a website specializing in summarizing data of all kinds through gorgeous visuals.
The efficacy of certain foods for certain conditions ranges from no evidence to strong evidence, with vast majority spanning the spectrum between slight evidence to inconclusive. The brighter the bubble, the better the evidence, with blue signifying items that are worth watching due to ongoing or game changing research. Depending on which category you choose, the size of the bubble reflects the superfoods popularity among either scientists or the general public. Clicking on each bubble will yield additional information and a link to the data, though you can find all the data utilized in the chart in this nifty spreadsheet here.
Of course, it is always better to consult as many varied sources as possible, but this is definitely a comprehensive — and more stimulating — place to start.