Yes. Reverse Osmosis water has lost most of its calcium and magnesium. For most people this is not a real worry. Food gives us most of our calcium and magnesium, not water. The World Health Organizati...

I remember the first time I switched from a jug filter to a proper Reverse Osmosis system . My kids had been getting through two or three jugs of filtered water a day, and I genuinely thought I was do...