This might seem like an odd subject for my food and travel blog. In fact, I have eclectic tastes and this article is well-written and presents a much-misunderstood subject with clarity. The founder of the website* where this link takes you has scientific credentials as well as spiritual ones. Hence the name of his website.
(*He has presented papers on the interface of science and spirituality as an invited delegate at national and international conferences, including World Peace Conference, 2006 and World Peace Congress, 2008 organized under the UNESCO chair etc)