MInerals - Why we need them even in a healthy diet!

Are we wasting our money on minerals? Here is what the 1992 Earth Summit Reported. They found that the mineral content of the world's farm and range land soil has decreased dramatically. North America 85% South America 76% Asia 76% Africa 74% Europe 72% Australia 55% In 1993, the World Health Organization reported that the United States soil was 95% depleted of essential minerals. That was nearly 30 years ago!  Wonder what the levels are like today?  Hmm?  Little or no minerals in the soil means our food is depleted and so are we.