answer:Interesting. But something that “has been hidden since the end of the Vietnam war” and just now released seems, well, bogus. The fact that it was just now revealed makes me think that this is somehow an invented story. And look at where it is published – in a blog that “blog for people interested in natural health, living with awareness and elevating their consciousness. We author and aggregate mind-opening articles, editorials and videos that inspire our readers and liberate them from the status quo.” (their web page) So the authors have a vested interest in making things like this seem true. This is not an unbiased, objective, neutral source. So there may be something to this, but in order to be believable, I would want to see some sort of actual (not anecdotal) data, with real statistics and a control group and all of that. Until that happens, I won’t give this any serious credence.