I have been hearing a lot about "superfoods", and these seem to change every year! The most recent Superfoods are Acai berry and Kefir. I'm skeptical about trying anything new, as I'm not sure if this is a marketing ploy, or if we have recently discovered the health benefits of these two foods. Something that does not change, from year to year, on the "superfood" lists seem to be green vegetables and spicy/hot peppers. Is there a reason for this, beyond the obvious?
thanks!