I found that article, and in fact the whole site, to be nothing more than a lengthy, confusing way of scaring people into buying their useless products. The words used are stupidly confusing and written so as to give no accurate information whatsoever, and yet sound intelligent. All the articles are littered with nonsense like:
'There is a correlation between the consumption of soft water (distilled water is extremely soft) and the incidence of cardiovascular disease.'
They can't say that drinking distilled water will give you cardiovascular disease, or even that it will increase your chances of getting it, because they obviously either have no idea, or they have done the research but they found that the truth clashed with their argument. Whenever they do find a tiny fact to support their claims, they shout about it excessively to draw it to your attention. To be honest, I wouldn't believe a single thing that they say on that web site; - just look at the 'Recommended Products' link, written in huge underlined letters. It leads to a page that tries to sell you bottles of magic cures, and foods that will turn you into some sort of God. In short, if that site says it's true then it probably isn't.